C. Sturm - the HADES Collaboration

C. Sturm
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C. Sturm
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the HADES Collaboration
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Nuclear Experiment (27)
 
High Energy Physics - Phenomenology (13)
 
High Energy Physics - Experiment (7)
 
Physics - Mesoscopic Systems and Quantum Hall Effect (6)
 
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Physics - Materials Science (4)
 
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Publications Authored By C. Sturm

2017Mar
Affiliations: 1Joint Institute of Nuclear Research, 141980 Dubna, Russia, 2Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 3LabCAF. F. Física, Univ. de Santiago de Compostela, 15706 Santiago de Compostela, Spain, 4Joint Institute of Nuclear Research, 141980 Dubna, Russia, 5Physik Department E12, Technische Universität München, 85748 Garching, Germany, 6LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 7Physik Department E12, Technische Universität München, 85748 Garching, Germany, 8Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France, 9LabCAF. F. Física, Univ. de Santiago de Compostela, 15706 Santiago de Compostela, Spain, 10Joint Institute of Nuclear Research, 141980 Dubna, Russia, 11Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 12Physik Department E12, Technische Universität München, 85748 Garching, Germany, 13Physik Department E12, Technische Universität München, 85748 Garching, Germany, 14Joint Institute of Nuclear Research, 141980 Dubna, Russia, 15Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, 95125 Catania, Italy, 16LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 17Physik Department E12, Technische Universität München, 85748 Garching, Germany, 18Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 19Technische Universität Darmstadt, 64289 Darmstadt, Germany, 20LabCAF. F. Física, Univ. de Santiago de Compostela, 15706 Santiago de Compostela, Spain, 21Physik Department E12, Technische Universität München, 85748 Garching, Germany, 22Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 23Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 24Technische Universität Darmstadt, 64289 Darmstadt, Germany, 25Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 26Technische Universität Darmstadt, 64289 Darmstadt, Germany, 27GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 28Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France, 29GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 30Joint Institute of Nuclear Research, 141980 Dubna, Russia, 31Istituto Nazionale di Fisica Nucleare, Sezione di Milano, 20133 Milano, Italy, 32Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 33Physik Department E12, Technische Universität München, 85748 Garching, Germany, 34Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 35Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 36GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 37GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 38GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 39Technische Universität Darmstadt, 64289 Darmstadt, Germany, 40Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 41Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic, 42Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic, 43Physik Department E12, Technische Universität München, 85748 Garching, Germany, 44Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 45II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 46Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic, 47Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 48Joint Institute of Nuclear Research, 141980 Dubna, Russia, 49Physik Department E12, Technische Universität München, 85748 Garching, Germany, 50GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 51Physik Department E12, Technische Universität München, 85748 Garching, Germany, 52Institute of Theoretical and Experimental Physics, 117218 Moscow, Russia, 53Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France, 54LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 55Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 56Physik Department E12, Technische Universität München, 85748 Garching, Germany, 57LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 58Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 59II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 60Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 61Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 62Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 63Physik Department E12, Technische Universität München, 85748 Garching, Germany, 64Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 65Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 66Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 67Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus, 68GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 69Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 70GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 71Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 72Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France, 73Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 74Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 75Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 76Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 77Lawrence Berkeley National Laboratory, Berkeley, USA, 78GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 79Physik Department E12, Technische Universität München, 85748 Garching, Germany, 80Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic, 81Dipartimento di Fisica and INFN, Università di Torino, 10125 Torino, Italy, 82II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 83Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 84Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 85GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 86Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 87Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 88Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic, 89GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 90Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 91Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus, 92Joint Institute of Nuclear Research, 141980 Dubna, Russia, 93Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic, 94Physik Department E12, Technische Universität München, 85748 Garching, Germany, 95Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 96Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 97GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 98Joint Institute of Nuclear Research, 141980 Dubna, Russia, 99NRC "Kurchatov Institute", PNPI, 188300, Gatchina, Russia, 100NRC "Kurchatov Institute", PNPI, 188300, Gatchina, Russia

Baryon resonance production in proton-proton collisions at a kinetic beam energy of 1.25 GeV is investigated. The multi-differential data were measured by the HADES collaboration. Read More

2017Mar
Authors: J. Adamczewski-Musch1, O. Arnold2, C. Behnke3, A. Belounnas4, A. Belyaev5, J. C. Berger-Chen6, J. Biernat7, A. Blanco8, C. Blume9, M. Böhmer10, P. Bordalo11, S. Chernenko12, L. Chlad13, C. Deveaux14, J. Dreyer15, A. Dybczak16, E. Epple17, L. Fabbietti18, O. Fateev19, P. Filip20, P. Fonte21, C. Franco22, J. Friese23, I. Fröhlich24, T. Galatyuk25, J. A. Garzon26, R. Gernhäuser27, M. Golubeva28, F. Guber29, M. Gumberidze30, S. Harabasz31, T. Heinz32, T. Hennino33, S. Hlavac34, C. Höhne35, R. Holzmann36, A. Ierusalimov37, A. Ivashkin38, B. Kämpfer39, T. Karavicheva40, B. Kardan41, I. Koenig42, W. Koenig43, B. W. Kolb44, G. Korcy45, G. Kornakov46, R. Kotte47, W. Kühn48, A. Kugler49, T. Kunz50, A. Kurepin51, A. Kurilkin52, P. Kurilkin53, V. Ladygin54, R. Lalik55, K. Lapidus56, A. Lebedev57, L. Lopes58, M. Lorenz59, T. Mahmoud60, L. Maier61, A. Mangiarotti62, J. Markert63, S. Maurus64, V. Metag65, J. Michel66, D. M. Mihaylov67, S. Morozov68, C. Müntz69, R. Münzer70, L. Naumann71, K. N. Nowakowski72, M. Palka73, Y. Parpottas74, V. Pechenov75, O. Pechenova76, O. Petukhov77, J. Pietraszko78, W. Przygoda79, S. Ramos80, B. Ramstein81, A. Reshetin82, P. Rodriguez-Ramos83, P. Rosier84, A. Rost85, A. Sadovsky86, P. Salabura87, T. Scheib88, H. Schuldes89, E. Schwab90, F. Scozzi91, F. Seck92, P. Sellheim93, J. Siebenson94, L. Silva95, Yu. G. Sobolev96, S. Spataro97, H. Ströbele98, J. Stroth99, P. Strzempek100, C. Sturm101, O. Svoboda102, M. Szala103, P. Tlusty104, M. Traxler105, H. Tsertos106, E. Usenko107, V. Wagner108, C. Wendisch109, M. G. Wiebusch110, J. Wirth111, Y. Zanevsky112, P. Zumbruch113
Affiliations: 1HADES collaboration, 2HADES collaboration, 3HADES collaboration, 4HADES collaboration, 5HADES collaboration, 6HADES collaboration, 7HADES collaboration, 8HADES collaboration, 9HADES collaboration, 10HADES collaboration, 11HADES collaboration, 12HADES collaboration, 13HADES collaboration, 14HADES collaboration, 15HADES collaboration, 16HADES collaboration, 17HADES collaboration, 18HADES collaboration, 19HADES collaboration, 20HADES collaboration, 21HADES collaboration, 22HADES collaboration, 23HADES collaboration, 24HADES collaboration, 25HADES collaboration, 26HADES collaboration, 27HADES collaboration, 28HADES collaboration, 29HADES collaboration, 30HADES collaboration, 31HADES collaboration, 32HADES collaboration, 33HADES collaboration, 34HADES collaboration, 35HADES collaboration, 36HADES collaboration, 37HADES collaboration, 38HADES collaboration, 39HADES collaboration, 40HADES collaboration, 41HADES collaboration, 42HADES collaboration, 43HADES collaboration, 44HADES collaboration, 45HADES collaboration, 46HADES collaboration, 47HADES collaboration, 48HADES collaboration, 49HADES collaboration, 50HADES collaboration, 51HADES collaboration, 52HADES collaboration, 53HADES collaboration, 54HADES collaboration, 55HADES collaboration, 56HADES collaboration, 57HADES collaboration, 58HADES collaboration, 59HADES collaboration, 60HADES collaboration, 61HADES collaboration, 62HADES collaboration, 63HADES collaboration, 64HADES collaboration, 65HADES collaboration, 66HADES collaboration, 67HADES collaboration, 68HADES collaboration, 69HADES collaboration, 70HADES collaboration, 71HADES collaboration, 72HADES collaboration, 73HADES collaboration, 74HADES collaboration, 75HADES collaboration, 76HADES collaboration, 77HADES collaboration, 78HADES collaboration, 79HADES collaboration, 80HADES collaboration, 81HADES collaboration, 82HADES collaboration, 83HADES collaboration, 84HADES collaboration, 85HADES collaboration, 86HADES collaboration, 87HADES collaboration, 88HADES collaboration, 89HADES collaboration, 90HADES collaboration, 91HADES collaboration, 92HADES collaboration, 93HADES collaboration, 94HADES collaboration, 95HADES collaboration, 96HADES collaboration, 97HADES collaboration, 98HADES collaboration, 99HADES collaboration, 100HADES collaboration, 101HADES collaboration, 102HADES collaboration, 103HADES collaboration, 104HADES collaboration, 105HADES collaboration, 106HADES collaboration, 107HADES collaboration, 108HADES collaboration, 109HADES collaboration, 110HADES collaboration, 111HADES collaboration, 112HADES collaboration, 113HADES collaboration

We present first data on charged kaons and {\phi} mesons in Au+Au collisions at a kinetic beam energy of 1.23A GeV. As observed already at slightly higher beam energies, we find significantly different slopes for the K+ and K- transverse-mass spectra, and no significant increase of the the K-/K+ multiplicity ratio with increasing centrality of the collision. Read More

2017Mar
Authors: J. Adamczewski-Musch1, O. Arnold2, E. T. Atomssa3, C. Behnke4, A. Belounnas5, A. Belyaev6, J. C. Berger-Chen7, J. Biernat8, A. Blanco9, C. Blume10, M. Böhmer11, P. Bordalo12, S. Chernenko13, L. Chlad14, C. Deveaux15, J. Dreyer16, A. Dybczak17, E. Epple18, L. Fabbietti19, O. Fateev20, P. Filip21, P. Finocchiaro22, P. Fonte23, C. Franco24, J. Friese25, I. Fröhlich26, T. Galatyuk27, J. A. Garzón28, R. Gernhäuser29, M. Golubeva30, F. Guber31, M. Gumberidze32, S. Harabasz33, T. Heinz34, T. Hennino35, S. Hlavac36, C. Höhne37, R. Holzmann38, A. Ierusalimov39, A. Ivashkin40, B. Kämpfer41, T. Karavicheva42, B. Kardan43, I. Koenig44, W. Koenig45, B. W. Kolb46, G. Korcyl47, G. Kornakov48, R. Kotte49, W. Kühn50, A. Kugler51, T. Kunz52, A. Kurepin53, A. Kurilkin54, P. Kurilkin55, V. Ladygin56, R. Lalik57, K. Lapidus58, A. Lebedev59, T. Liu60, L. Lopes61, M. Lorenz62, T. Mahmoud63, L. Maier64, A. Mangiarotti65, J. Markert66, S. Maurus67, V. Metag68, J. Michel69, E. Morinière70, D. M. Mihaylov71, S. Morozov72, C. Müntz73, R. Münzer74, L. Naumann75, K. N. Nowakowski76, M. Palka77, Y. Parpottas78, V. Pechenov79, O. Pechenova80, O. Petukhov81, J. Pietraszko82, W. Przygoda83, S. Ramos84, B. Ramstein85, A. Reshetin86, P. Rodriguez-Ramos87, P. Rosier88, A. Rost89, A. Sadovsky90, P. Salabura91, T. Scheib92, H. Schuldes93, E. Schwab94, F. Scozzi95, F. Seck96, P. Sellheim97, J. Siebenson98, L. Silva99, Yu. G. Sobolev100, S. Spataro101, H. Ströbele102, J. Stroth103, P. Strzempek104, C. Sturm105, O. Svoboda106, P. Tlusty107, M. Traxler108, H. Tsertos109, E. Usenko110, V. Wagner111, C. Wendisch112, M. G. Wiebusch113, J. Wirth114, Y. Zanevsky115, P. Zumbruch116, A. V. Sarantsev117
Affiliations: 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 2Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 3Institut de Physique Nucléaire, 4Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 5Institut de Physique Nucléaire, 6Joint Institute for Nuclear Research, 141980 Dubna, Russia, 7Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 8Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 9LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 10Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 11Physik Department E12, Technische Universität München, 85748 Garching, Germany, 12LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 13Joint Institute for Nuclear Research, 141980 Dubna, Russia, 14Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 15II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 16Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 17Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 18Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 19Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 20Joint Institute for Nuclear Research, 141980 Dubna, Russia, 21Institute of Physics, Slovak Academy of Sciences, 84228 Bratislava, Slovakia, 22Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, 95125 Catania, Italy, 23LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 24LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 25Physik Department E12, Technische Universität München, 85748 Garching, Germany, 26Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 27Technische Universität Darmstadt, 64289 Darmstadt, Germany, 28LabCAF. F. Física, Univ. de Santiago de Compostela, 15706 Santiago de Compostela, Spain, 29Physik Department E12, Technische Universität München, 85748 Garching, Germany, 30Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 31Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 32Technische Universität Darmstadt, 64289 Darmstadt, Germany, 33Technische Universität Darmstadt, 64289 Darmstadt, Germany, 34GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 35Institut de Physique Nucléaire, 36Institute of Physics, Slovak Academy of Sciences, 84228 Bratislava, Slovakia, 37II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 38GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 39Joint Institute for Nuclear Research, 141980 Dubna, Russia, 40Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 41Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 42Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 43Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 44GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 45GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 46GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 47Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 48Technische Universität Darmstadt, 64289 Darmstadt, Germany, 49Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 50II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 51Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 52Physik Department E12, Technische Universität München, 85748 Garching, Germany, 53Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 54Joint Institute for Nuclear Research, 141980 Dubna, Russia, 55Joint Institute for Nuclear Research, 141980 Dubna, Russia, 56Joint Institute for Nuclear Research, 141980 Dubna, Russia, 57Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 58Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 59Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia, 60Institut de Physique Nucléaire, 61LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 62Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 63II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 64Physik Department E12, Technische Universität München, 85748 Garching, Germany, 65LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 66Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 67Physik Department E12, Technische Universität München, 85748 Garching, Germany, 68II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 69Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 70Institut de Physique Nucléaire, 71Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 72Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 73Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 74Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 75Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 76Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 77Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 78Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus, 79GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 80Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 81Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 82GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 83Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 84LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 85Institut de Physique Nucléaire, 86Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 87Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 88Institut de Physique Nucléaire, 89Technische Universität Darmstadt, 64289 Darmstadt, Germany, 90Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 91Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 92Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 93Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 94GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 95Technische Universität Darmstadt, 64289 Darmstadt, Germany, 96Technische Universität Darmstadt, 64289 Darmstadt, Germany, 97Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 98Physik Department E12, Technische Universität München, 85748 Garching, Germany, 99LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 100Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 101Dipartimento di Fisica and INFN, Università di Torino, 10125 Torino, Italy, 102Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 103Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 104Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 105GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 106Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 107Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 108GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 109Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus, 110Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 111Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 112GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 113Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 114Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 115Joint Institute for Nuclear Research, 141980 Dubna, Russia, 116GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 117NRC "Kurchatov Institute", PNPI, 188300, Gatchina, Russia

We report on the investigation of dielectron production in tagged quasi-free neutron-proton collisions by using a deuteron beam of kinetic energy 1.25 GeV/u inpinging on a liquid hydrogen target. Our measurements with HADES confirm a significant excess of $e^+e^-$ pairs above the $\pi^{0}$ mass in the exclusive channel $dp \to npe^{+}e^{-}(p_{spect})$ as compared to the exclusive channel $ppe^{+}e^{-}$ measured in proton-proton collisions at the same energy. Read More

2017Mar
Authors: J. Adamczewski-Musch1, O. Arnold2, E. T. Atomssa3, C. Behnke4, A. Belounnas5, A. Belyaev6, J. C. Berger-Chen7, J. Biernat8, A. Blanco9, C. Blume10, M. Böhmer11, P. Bordalo12, S. Chernenko13, L. Chlad14, C. Deveaux15, J. Dreyer16, A. Dybczak17, E. Epple18, L. Fabbietti19, O. Fateev20, P. Filip21, P. Finocchiaro22, P. Fonte23, C. Franco24, J. Friese25, I. Fröhlich26, T. Galatyuk27, J. A. Garzón28, R. Gernhäuser29, M. Golubeva30, F. Guber31, M. Gumberidze32, S. Harabasz33, T. Heinz34, T. Hennino35, S. Hlavac36, C. Höhne37, R. Holzmann38, A. Ierusalimov39, A. Ivashkin40, B. Kämpfer41, T. Karavicheva42, B. Kardan43, I. Koenig44, W. Koenig45, B. W. Kolb46, G. Korcyl47, G. Kornakov48, R. Kotte49, W. Kühn50, A. Kugler51, T. Kunz52, A. Kurepin53, A. Kurilkin54, P. Kurilkin55, V. Ladygin56, R. Lalik57, K. Lapidus58, A. Lebedev59, T. Liu60, L. Lopes61, M. Lorenz62, T. Mahmoud63, L. Maier64, A. Mangiarotti65, J. Markert66, S. Maurus67, V. Metag68, J. Michel69, E. Morinière70, D. M. Mihaylov71, S. Morozov72, C. Müntz73, R. Münzer74, L. Naumann75, K. N. Nowakowski76, M. Palka77, Y. Parpottas78, V. Pechenov79, O. Pechenova80, O. Petukhov81, J. Pietraszko82, W. Przygoda83, S. Ramos84, B. Ramstein85, A. Reshetin86, P. Rodriguez-Ramos87, P. Rosier88, A. Rost89, A. Sadovsky90, P. Salabura91, T. Scheib92, H. Schuldes93, E. Schwab94, F. Scozzi95, F. Seck96, P. Sellheim97, J. Siebenson98, L. Silva99, Yu. G. Sobolev100, S. Spataro101, H. Ströbele102, J. Stroth103, P. Strzempek104, C. Sturm105, O. Svoboda106, P. Tlusty107, M. Traxler108, H. Tsertos109, E. Usenko110, V. Wagner111, C. Wendisch112, M. G. Wiebusch113, J. Wirth114, Y. Zanevsky115, P. Zumbruch116, A. V. Sarantsev117
Affiliations: 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 2Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 3Institut de Physique Nucléaire, 4Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 5Institut de Physique Nucléaire, 6Joint Institute for Nuclear Research, 141980 Dubna, Russia, 7Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 8Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 9LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 10Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 11Physik Department E12, Technische Universität München, 85748 Garching, Germany, 12LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 13Joint Institute for Nuclear Research, 141980 Dubna, Russia, 14Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 15II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 16Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 17Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 18Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 19Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 20Joint Institute for Nuclear Research, 141980 Dubna, Russia, 21Institute of Physics, Slovak Academy of Sciences, 84228 Bratislava, Slovakia, 22Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, 95125 Catania, Italy, 23LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 24LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 25Physik Department E12, Technische Universität München, 85748 Garching, Germany, 26Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 27Technische Universität Darmstadt, 64289 Darmstadt, Germany, 28LabCAF. F. Física, Univ. de Santiago de Compostela, 15706 Santiago de Compostela, Spain, 29Physik Department E12, Technische Universität München, 85748 Garching, Germany, 30Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 31Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 32Technische Universität Darmstadt, 64289 Darmstadt, Germany, 33Technische Universität Darmstadt, 64289 Darmstadt, Germany, 34GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 35Institut de Physique Nucléaire, 36Institute of Physics, Slovak Academy of Sciences, 84228 Bratislava, Slovakia, 37II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 38GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 39Joint Institute for Nuclear Research, 141980 Dubna, Russia, 40Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 41Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 42Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 43Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 44GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 45GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 46GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 47Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 48Technische Universität Darmstadt, 64289 Darmstadt, Germany, 49Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 50II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 51Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 52Physik Department E12, Technische Universität München, 85748 Garching, Germany, 53Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 54Joint Institute for Nuclear Research, 141980 Dubna, Russia, 55Joint Institute for Nuclear Research, 141980 Dubna, Russia, 56Joint Institute for Nuclear Research, 141980 Dubna, Russia, 57Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 58Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 59Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia, 60Institut de Physique Nucléaire, 61LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 62Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 63II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 64Physik Department E12, Technische Universität München, 85748 Garching, Germany, 65LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 66Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 67Physik Department E12, Technische Universität München, 85748 Garching, Germany, 68II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany, 69Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 70Institut de Physique Nucléaire, 71Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 72Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 73Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 74Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 75Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany, 76Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 77Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 78Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus, 79GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 80Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 81Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 82GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 83Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 84LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 85Institut de Physique Nucléaire, 86Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 87Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 88Institut de Physique Nucléaire, 89Technische Universität Darmstadt, 64289 Darmstadt, Germany, 90Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 91Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 92Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 93Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 94GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 95Technische Universität Darmstadt, 64289 Darmstadt, Germany, 96Technische Universität Darmstadt, 64289 Darmstadt, Germany, 97Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 98Physik Department E12, Technische Universität München, 85748 Garching, Germany, 99LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal, 100Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 101Dipartimento di Fisica and INFN, Università di Torino, 10125 Torino, Italy, 102Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 103Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 104Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland, 105GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 106Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 107Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 108GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 109Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus, 110Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow, Russia, 111Nuclear Physics Institute, Czech Academy of Sciences, 25068 Rez, Czech Republic, 112GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 113Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany, 114Excellence Cluster 'Origin and Structure of the Universe', 85748 Garching, Germany, 115Joint Institute for Nuclear Research, 141980 Dubna, Russia, 116GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany, 117NRC "Kurchatov Institute", PNPI, 188300, Gatchina, Russia

We report on the investigation of $\Delta$(1232) production and decay in proton-proton collisions at a kinetic energy of 1.25 GeV measured with HADES. Exclusive dilepton decay channels $ppe^{+}e^{-}$ and $ppe^{+}e^{-}\gamma$ have been studied and compared with the partial wave analysis of the hadronic $pp\pi^{0}$ channel. Read More

Working within the post-Newtonian (PN) approximation to General Relativity, we use the effective field theory (EFT) framework to study the conservative dynamics of the two-body motion at fourth PN order, at fifth order in the Newton constant. This is one of the missing pieces preventing the computation of the full Lagrangian at fourth PN order using EFT methods. We exploit the analogy between diagrams in the EFT gravitational theory and 2-point functions in massless gauge theory, to address the calculation of 4-loop amplitudes by means of standard multi-loop diagrammatic techniques. Read More

The inclusive production of {\Lambda} hyperons in proton-proton collisions at $\sqrt{s}$ = 3.18 GeV was measured with HADES at the GSI Helmholtzzentrum f\"ur Schwerionenforschung in Darmstadt. The experimental data are compared to a data-based model for individual exclusive {\Lambda} production channels in the same reaction. Read More

Planar microcavities allow the control and manipulation of spin-polarization, manifested in phenomena like the optical spin Hall effect due to the intrinsic polarization mode splitting. Here, we study a transparent microcavity with broken rotational symmetry, realized by aligning the optical axis of a uniaxial cavity material in the cavity plane. We demonstrate that the in-plane optical anisotropy gives rise to exceptional points in the dispersion relation, which occur pair-wise, are circularly polarized, and are cores of polarization vortices. Read More

We present a consistent renormalization scheme for the CP-conserving Two-Higgs-Doublet Model based on $\overline{MS}$ renormalization of the mixing angles and the soft-$Z_2$-symmetry-breaking scale $M_{sb}$ in the Higgs sector. This scheme requires to treat tadpoles fully consistently in all steps of the calculation in order to provide gauge-independent $S$-matrix elements. We show how bare physical parameters have to be defined and verify the gauge independence of physical quantities by explicit calculations in a general $R_{\xi}$-gauge. Read More

2016Jul
Authors: CBM Collaboration, T. Ablyazimov, A. Abuhoza, R. P. Adak, M. Adamczyk, K. Agarwal, M. M. Aggarwal, Z. Ahammed, F. Ahmad, N. Ahmad, S. Ahmad, A. Akindinov, P. Akishin, E. Akishina, T. Akishina, V. Akishina, A. Akram, M. Al-Turany, I. Alekseev, E. Alexandrov, I. Alexandrov, S. Amar-Youcef, M. Anđelić, O. Andreeva, C. Andrei, A. Andronic, Yu. Anisimov, H. Appelshäuser, D. Argintaru, E. Atkin, S. Avdeev, R. Averbeck, M. D. Azmi, V. Baban, M. Bach, E. Badura, S. Bähr, T. Balog, M. Balzer, E. Bao, N. Baranova, T. Barczyk, D. Bartoş, S. Bashir, M. Baszczyk, O. Batenkov, V. Baublis, M. Baznat, J. Becker, K. -H. Becker, S. Belogurov, D. Belyakov, J. Bendarouach, I. Berceanu, A. Bercuci, A. Berdnikov, Y. Berdnikov, R. Berendes, G. Berezin, C. Bergmann, D. Bertini, O. Bertini, C. Beşliu, O. Bezshyyko, P. P. Bhaduri, A. Bhasin, A. K. Bhati, B. Bhattacharjee, A. Bhattacharyya, T. K. Bhattacharyya, S. Biswas, T. Blank, D. Blau, V. Blinov, C. Blume, Yu. Bocharov, J. Book, T. Breitner, U. Brüning, J. Brzychczyk, A. Bubak, H. Büsching, T. Bus, V. Butuzov, A. Bychkov, A. Byszuk, Xu Cai, M. Cálin, Ping Cao, G. Caragheorgheopol, I. Carević, V. Cătănescu, A. Chakrabarti, S. Chattopadhyay, A. Chaus, Hongfang Chen, LuYao Chen, Jianping Cheng, V. Chepurnov, H. Cherif, A. Chernogorov, M. I. Ciobanu, G. Claus, F. Constantin, M. Csanád, N. D'Ascenzo, Supriya Das, Susovan Das, J. de Cuveland, B. Debnath, D. Dementiev, Wendi Deng, Zhi Deng, H. Deppe, I. Deppner, O. Derenovskaya, C. A. Deveaux, M. Deveaux, K. Dey, M. Dey, P. Dillenseger, V. Dobyrn, D. Doering, Sheng Dong, A. Dorokhov, M. Dreschmann, A. Drozd, A. K. Dubey, S. Dubnichka, Z. Dubnichkova, M. Dürr, L. Dutka, M. Dželalija, V. V. Elsha, D. Emschermann, H. Engel, V. Eremin, T. Eşanu, J. Eschke, D. Eschweiler, Huanhuan Fan, Xingming Fan, M. Farooq, O. Fateev, Shengqin Feng, S. P. D. Figuli, I. Filozova, D. Finogeev, P. Fischer, H. Flemming, J. Förtsch, U. Frankenfeld, V. Friese, E. Friske, I. Fröhlich, J. Frühauf, J. Gajda, T. Galatyuk, G. Gangopadhyay, C. García Chávez, J. Gebelein, P. Ghosh, S. K. Ghosh, S. Gläßel, M. Goffe, L. Golinka-Bezshyyko, V. Golovatyuk, S. Golovnya, V. Golovtsov, M. Golubeva, D. Golubkov, A. Gómez Ramírez, S. Gorbunov, S. Gorokhov, D. Gottschalk, P. Gryboś, A. Grzeszczuk, F. Guber, K. Gudima, M. Gumiński, A. Gupta, Yu. Gusakov, Dong Han, H. Hartmann, Shue He, J. Hehner, N. Heine, A. Herghelegiu, N. Herrmann, B. Heß, J. M. Heuser, A. Himmi, C. Höhne, R. Holzmann, Dongdong Hu, Guangming Huang, Xinjie Huang, D. Hutter, A. Ierusalimov, E. -M. Ilgenfritz, M. Irfan, D. Ivanischev, M. Ivanov, P. Ivanov, Valery Ivanov, Victor Ivanov, Vladimir Ivanov, A. Ivashkin, K. Jaaskelainen, H. Jahan, V. Jain, V. Jakovlev, T. Janson, Di Jiang, A. Jipa, I. Kadenko, P. Kähler, B. Kämpfer, V. Kalinin, J. Kallunkathariyil, K. -H. Kampert, E. Kaptur, R. Karabowicz, O. Karavichev, T. Karavicheva, D. Karmanov, V. Karnaukhov, E. Karpechev, K. Kasiński, G. Kasprowicz, M. Kaur, A. Kazantsev, U. Kebschull, G. Kekelidze, M. M. Khan, S. A. Khan, A. Khanzadeev, F. Khasanov, A. Khvorostukhin, V. Kirakosyan, M. Kirejczyk, A. Kiryakov, M. Kiš, I. Kisel, P. Kisel, S. Kiselev, T. Kiss, P. Klaus, R. Kłeczek, Ch. Klein-Bösing, V. Kleipa, V. Klochkov, P. Kmon, K. Koch, L. Kochenda, P. Koczoń, W. Koenig, M. Kohn, B. W. Kolb, A. Kolosova, B. Komkov, M. Korolev, I. Korolko, R. Kotte, A. Kovalchuk, S. Kowalski, M. Koziel, G. Kozlov, V. Kozlov, V. Kramarenko, P. Kravtsov, E. Krebs, C. Kreidl, I. Kres, D. Kresan, G. Kretschmar, M. Krieger, A. V. Kryanev, E. Kryshen, M. Kuc, W. Kucewicz, V. Kucher, L. Kudin, A. Kugler, Ajit Kumar, Ashwini Kumar, L. Kumar, J. Kunkel, A. Kurepin, N. Kurepin, A. Kurilkin, P. Kurilkin, V. Kushpil, S. Kuznetsov, V. Kyva, V. Ladygin, C. Lara, P. Larionov, A. Laso García, E. Lavrik, I. Lazanu, A. Lebedev, S. Lebedev, E. Lebedeva, J. Lehnert, J. Lehrbach, Y. Leifels, F. Lemke, Cheng Li, Qiyan Li, Xin Li, Yuanjing Li, V. Lindenstruth, B. Linnik, Feng Liu, I. Lobanov, E. Lobanova, S. Löchner, P. -A. Loizeau, S. A. Lone, J. A. Lucio Martínez, Xiaofeng Luo, A. Lymanets, Pengfei Lyu, A. Maevskaya, S. Mahajan, D. P. Mahapatra, T. Mahmoud, P. Maj, Z. Majka, A. Malakhov, E. Malankin, D. Malkevich, O. Malyatina, H. Malygina, M. M. Mandal, S. Mandal, V. Manko, S. Manz, A. M. Marin Garcia, J. Markert, S. Masciocchi, T. Matulewicz, L. Meder, M. Merkin, V. Mialkovski, J. Michel, N. Miftakhov, L. Mik, K. Mikhailov, V. Mikhaylov, B. Milanović, V. Militsija, D. Miskowiec, I. Momot, T. Morhardt, S. Morozov, W. F. J. Müller, C. Müntz, S. Mukherjee, C. E. Muńoz Castillo, Yu. Murin, R. Najman, C. Nandi, E. Nandy, L. Naumann, T. Nayak, A. Nedosekin, V. S. Negi, W. Niebur, V. Nikulin, D. Normanov, A. Oancea, Kunsu Oh, Yu. Onishchuk, G. Ososkov, P. Otfinowski, E. Ovcharenko, S. Pal, I. Panasenko, N. R. Panda, S. Parzhitskiy, V. Patel, C. Pauly, M. Penschuck, D. Peshekhonov, V. Peshekhonov, V. Petráček, M. Petri, M. Petriş, A. Petrovici, M. Petrovici, A. Petrovskiy, O. Petukhov, D. Pfeifer, K. Piasecki, J. Pieper, J. Pietraszko, R. Płaneta, V. Plotnikov, V. Plujko, J. Pluta, A. Pop, V. Pospisil, K. Poźniak, A. Prakash, S. K. Prasad, M. Prokudin, I. Pshenichnov, M. Pugach, V. Pugatch, S. Querchfeld, S. Rabtsun, L. Radulescu, S. Raha, F. Rami, R. Raniwala, S. Raniwala, A. Raportirenko, J. Rautenberg, J. Rauza, R. Ray, S. Razin, P. Reichelt, S. Reinecke, A. Reinefeld, A. Reshetin, C. Ristea, O. Ristea, A. Rodriguez Rodriguez, F. Roether, R. Romaniuk, A. Rost, E. Rostchin, I. Rostovtseva, Amitava Roy, Ankhi Roy, J. Rożynek, Yu. Ryabov, A. Sadovsky, R. Sahoo, P. K. Sahu, S. K. Sahu, J. Saini, S. Samanta, S. S. Sambyal, V. Samsonov, J. Sánchez Rosado, O. Sander, S. Sarangi, T. Satława, S. Sau, V. Saveliev, S. Schatral, C. Schiaua, F. Schintke, C. J. Schmidt, H. R. Schmidt, K. Schmidt, J. Scholten, K. Schweda, F. Seck, S. Seddiki, I. Selyuzhenkov, A. Semennikov, A. Senger, P. Senger, A. Shabanov, A. Shabunov, Ming Shao, A. D. Sheremetiev, Shusu Shi, N. Shumeiko, V. Shumikhin, I. Sibiryak, B. Sikora, A. Simakov, C. Simon, C. Simons, R. N. Singaraju, A. K. Singh, B. K. Singh, C. P. Singh, V. Singhal, M. Singla, P. Sitzmann, K. Siwek-Wilczyńska, L. Škoda, I. Skwira-Chalot, I. Som, Guofeng Song, Jihye Song, Z. Sosin, D. Soyk, P. Staszel, M. Strikhanov, S. Strohauer, J. Stroth, C. Sturm, R. Sultanov, Yongjie Sun, D. Svirida, O. Svoboda, A. Szabó, R. Szczygieł, R. Talukdar, Zebo Tang, M. Tanha, J. Tarasiuk, O. Tarassenkova, M. -G. Târzilă, M. Teklishyn, T. Tischler, P. Tlustý, T. Tölyhi, A. Toia, N. Topil'skaya, M. Träger, S. Tripathy, I. Tsakov, Yu. Tsyupa, A. Turowiecki, N. G. Tuturas, F. Uhlig, E. Usenko, I. Valin, D. Varga, I. Vassiliev, O. Vasylyev, E. Verbitskaya, W. Verhoeven, A. Veshikov, R. Visinka, Y. P. Viyogi, S. Volkov, A. Volochniuk, A. Vorobiev, Aleksey Voronin, Alexander Voronin, V. Vovchenko, M. Vznuzdaev, Dong Wang, Xi-Wei Wang, Yaping Wang, Yi Wang, M. Weber, C. Wendisch, J. P. Wessels, M. Wiebusch, J. Wiechula, D. Wielanek, A. Wieloch, A. Wilms, N. Winckler, M. Winter, K. Wiśniewski, Gy. Wolf, Sanguk Won, Ke-Jun Wu, J. Wüstenfeld, Changzhou Xiang, Nu Xu, Junfeng Yang, Rongxing Yang, Zhongbao Yin, In-Kwon Yoo, B. Yuldashev, I. Yushmanov, W. Zabołotny, Yu. Zaitsev, N. I. Zamiatin, Yu. Zanevsky, M. Zhalov, Yifei Zhang, Yu Zhang, Lei Zhao, Jiajun Zheng, Sheng Zheng, Daicui Zhou, Jing Zhou, Xianglei Zhu, A. Zinchenko, W. Zipper, M. Żoładź, P. Zrelov, V. Zryuev, P. Zumbruch, M. Zyzak

Substantial experimental and theoretical efforts worldwide are devoted to explore the phase diagram of strongly interacting matter. At LHC and top RHIC energies, QCD matter is studied at very high temperatures and nearly vanishing net-baryon densities. There is evidence that a Quark-Gluon-Plasma (QGP) was created at experiments at RHIC and LHC. Read More

The Raman spectrum and particularly the Raman scattering intensities of monoclinic $\beta\text{-Ga}_2\text{O}_3$ are investigated by experiment and theory. The low symmetry of $\beta\text{-Ga}_2\text{O}_3$ results in a complex dependence of the Raman intensity for the individual phonon modes on the scattering geometry which is additionally affected by birefringence. We measured the Raman spectra in dependence on the polarization direction for backscattering on three crystallographic planes of $\beta\text{-Ga}_2\text{O}_3$ and modeled these dependencies using a modified Raman tensor formalism which takes birefringence into account. Read More

We report on the first measurement of $p\Lambda$ and $pp$ correlations via the femtoscopy method in p+Nb reactions at $\mathrm{\sqrt{s_{NN}}=3.18} ~\mathrm{GeV}$, studied with the High Acceptance Di-Electron Spectrometer (HADES). By comparing the experimental correlation function to model calculations, a source size for $pp$ pairs of $r_{0,pp}=2. Read More

We apply a generalized model for the determination and analysis of the dielectric function of optically anisotropic materials with colour dispersion to phonon modes and show that it can also be generalized to excitonic polarizabilities and electronic band-band transitions. We take into account that the tensor components of the dielectric function within the cartesian coordinate system are not independent from each other but are rather projections of the polarization of dipoles oscillating along directions defined by the, non-cartesian, crystal symmetry and polarizability. The dielectric function is then composed of a series of oscillators pointing in different directions. Read More

We report on the temporal lasing dynamics of high quality ZnO nanowires using time-resolved micro-photoluminescence technique. The temperature dependence of the lasing characteristics and of the corresponding decay constants demonstrate the formation of an electron-hole plasma to be the underlying gain mechanism in the considered temperature range from 10 K to 300 K. We found that the temperature dependent emission onset-time ($t_{\text{on}}$) strongly depends on the excitation power and becomes smallest in the lasing regime, with values below 5 ps. Read More

We classify and distinguish optically biaxial materials, which can have triclinic, monoclinic or orthorhombic crystal symmetry, by the degeneracy of the indices of refraction of their four singular optical axes (Windungsachsen) in the absorption regime. We provide explicit analytical solutions for angular orientations of the singular optical axes in monoclinic crystals and orthorhombic crystals. As a model material we analyze monoclinic gallia ($\beta$-Ga$_2$O$_3$) and discuss in detail the dispersion (i. Read More

2015Dec

The HADES data from p+Nb collisions at center of mass energy of $\sqrt{s_{NN}}$= 3.2 GeV are analyzed by employing a statistical model. Accounting for the identified hadrons $\pi^0$, $\eta$, $\Lambda$, $K^{0}_{s}$, $\omega$ allows a surprisingly good description of their abundances with parameters $T_{chem}=(99\pm11)$ MeV and $\mu_{b}=(619\pm34)$ MeV, which fits well in the chemical freeze-out systematics found in heavy-ion collisions. Read More

The dielectric tensor of $\beta$-Ga$_2$O$_3$ was determined by generalized spectroscopic ellipsometry in a wide spectral range from $0.5\,\mathrm{eV}$ to $8.5\,\mathrm{eV}$ as well as by calculation including quasiparticle bands and excitonic effects. Read More

We present results on the K*(892)+ production in proton-proton collisions at a beam energy of E = 3.5 GeV, which is hitherto the lowest energy at which this mesonic resonance has been observed in nucleon-nucleon reactions. The data are interpreted within a two-channel model that includes the 3-body production of K*(892)+ associated with the Lambda- or Sigma-hyperon. Read More

The tagged quasi-free $np \to np\pi^+\pi^-$ reaction has been studied experimentally with the High Acceptance Di-Electron Spectrometer (HADES) at GSI at a deuteron incident beam energy of 1.25 GeV/nucleon ($\sqrt s \sim$ 2.42 GeV/c for the quasi-free collision). Read More

A brief discussion of massive tadpole diagrams and their phenomenological consequences is presented. This includes predictions of the $\rho$ parameter and, as a consequence, the mass of the $W$ boson, implications on the charm and bottom quark masses from the moments, i.e. Read More

Results on the production of the double-strange cascade hyperon $\mathrm{\Xi^-}$ are reported for collisions of p\,(3.5~GeV)\,+\,Nb, studied with the High Acceptance Di-Electron Spectrometer (HADES) at SIS18 at GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt. For the first time, subthreshold $\mathrm{\Xi^-}$ production is observed in proton-nucleus interactions. Read More

We present indications, that the wave function-stiffness condition during energy-relaxation as observed in single-phase state quantum systems manifests also in a single particle ensemble. This is demonstrated for exciton-polaritons in the strong coupling regime in a ZnO-based microcavity at T = 10 K for non-resonant excitation. It is well known that the pump-induced spatially inhomogeneous background potential leads to nearly equally spaced energy levels in the k-space distribution for propagating polariton Bose-Einstein condensates. Read More

We report on the influence of disorder on an exciton-polariton condensate in a ZnO based bulk planar microcavity and compare experimental results with a theoretical model for a non-equilibrium condensate. Experimentally, we detect intensity fluctuations within the far-field emission pattern even at high condensate densities which indicates a significant impact of disorder. We show that these effects rely on the driven dissipative nature of the condensate and argue that they can be accounted for by spatial phase inhomogeneities induced by disorder, which occur even for increasing condensate densities realized in the regime of high excitation power. Read More

Employing the Bonn-Gatchina partial wave analysis framework (PWA), we have analyzed HADES data of the reaction $p(3.5GeV)+p\to pK^{+}\Lambda$. This reaction might contain information about the kaonic cluster "$ppK^-$" via its decay into $p\Lambda$. Read More

We investigate exciton-polariton condensation under magnetic field in a single high-quality semiconductor micropillar cavity. We observe successive polariton condensation of each spin component for two distinct threshold powers. Pronounced and non-monotonous variations of both the Zeeman splitting and the circular polarization of the emission are measured across these two condensation thresholds. Read More

2014Apr
Affiliations: 1the HADES Collaboration, 2the HADES Collaboration, 3the HADES Collaboration, 4the HADES Collaboration, 5the HADES Collaboration, 6the HADES Collaboration, 7the HADES Collaboration, 8the HADES Collaboration, 9the HADES Collaboration, 10the HADES Collaboration, 11the HADES Collaboration, 12the HADES Collaboration, 13the HADES Collaboration, 14the HADES Collaboration, 15the HADES Collaboration, 16the HADES Collaboration, 17the HADES Collaboration, 18the HADES Collaboration, 19the HADES Collaboration, 20the HADES Collaboration, 21the HADES Collaboration, 22the HADES Collaboration, 23the HADES Collaboration, 24the HADES Collaboration, 25the HADES Collaboration, 26the HADES Collaboration, 27the HADES Collaboration, 28the HADES Collaboration, 29the HADES Collaboration, 30the HADES Collaboration, 31the HADES Collaboration, 32the HADES Collaboration, 33the HADES Collaboration, 34the HADES Collaboration, 35the HADES Collaboration, 36the HADES Collaboration, 37the HADES Collaboration, 38the HADES Collaboration, 39the HADES Collaboration, 40the HADES Collaboration, 41the HADES Collaboration, 42the HADES Collaboration, 43the HADES Collaboration, 44the HADES Collaboration, 45the HADES Collaboration, 46the HADES Collaboration, 47the HADES Collaboration, 48the HADES Collaboration, 49the HADES Collaboration, 50the HADES Collaboration, 51the HADES Collaboration, 52the HADES Collaboration, 53the HADES Collaboration, 54the HADES Collaboration, 55the HADES Collaboration, 56the HADES Collaboration, 57the HADES Collaboration, 58the HADES Collaboration, 59the HADES Collaboration, 60the HADES Collaboration, 61the HADES Collaboration, 62the HADES Collaboration, 63the HADES Collaboration, 64the HADES Collaboration, 65the HADES Collaboration, 66the HADES Collaboration, 67the HADES Collaboration, 68the HADES Collaboration, 69the HADES Collaboration, 70the HADES Collaboration, 71the HADES Collaboration, 72the HADES Collaboration, 73the HADES Collaboration, 74the HADES Collaboration, 75the HADES Collaboration, 76the HADES Collaboration, 77the HADES Collaboration, 78the HADES Collaboration, 79the HADES Collaboration, 80the HADES Collaboration, 81the HADES Collaboration, 82the HADES Collaboration, 83the HADES Collaboration, 84the HADES Collaboration, 85the HADES Collaboration, 86the HADES Collaboration, 87the HADES Collaboration, 88the HADES Collaboration, 89the HADES Collaboration, 90the HADES Collaboration, 91the HADES Collaboration, 92the HADES Collaboration, 93the HADES Collaboration, 94the HADES Collaboration, 95the HADES Collaboration

We present the analysis of the inclusive $K^{0}$ production in p+p and p+Nb collisions measured with the HADES detector at a beam kinetic energy of 3.5 GeV. Data are compared to the GiBUU transport model. Read More

We compute the decoupling function of the MSbar renormalized fine-structure constant up to four-loop order in perturbative QCD. The results are used in order to determine the related top-quark contributions to the Higgs-boson decay into two photons in the heavy top-quark mass limit to order alpha_s^4. Read More

Results on $\Lambda$ hyperon production are reported for collisions of p(3.5 GeV) + Nb, studied with the High Acceptance Di-Electron Spectrometer (HADES) at SIS18 at GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt. The transverse mass distributions in rapidity bins are well described by Boltzmann shapes with a maximum inverse slope parameter of about $90\,$MeV at a rapidity of $y=1. Read More

An exclusive analysis of the 4-body final states $\mathrm{\Lambda + p + \pi^{+} + K^{0}}$ and $\mathrm{\Sigma^{0} + p + \pi^{+} + K^{0}}$ measured with HADES for p+p collisions at a beam kinetic energy of 3.5 GeV is presented. The analysis uses various phase space variables, such as missing mass and invariant mass distributions, in the four particle event selection (p, $\pi^+$, $\pi^+$, $\pi^-$) to find cross sections of the different production channels, contributions of the intermediate resonances $\mathrm{\Delta^{++}}$ and $\mathrm{\Sigma(1385)^{+}}$ and corresponding angular distributions. Read More

2014Mar
Affiliations: 1Joint Institute of Nuclear Research, Dubna, Russia, 2Smoluchowski Institute of Physics, Jagiellonian University of Cracow, Poland, 3LabCAF. F. Física, Univ. de Santiago de Compostela, Spain, 4Joint Institute of Nuclear Research, Dubna, Russia, 5Excellence Cluster 'Origin and Structure of the Universe', Garching, Germany, 6LIP-Laboratório de Instrumentação e Física Experimental de Partículas, Portugal, 7Physik Department E12, Technische Universität München, Germany, 8Institut de Physique Nucléaire, CNRS/IN2P3 - Université Paris Sud, Orsay Cedex, France, 9LabCAF. F. Física, Univ. de Santiago de Compostela, Spain, 10Joint Institute of Nuclear Research, Dubna, Russia, 11Smoluchowski Institute of Physics, Jagiellonian University of Cracow, Poland, 12Excellence Cluster 'Origin and Structure of the Universe', Garching, Germany, 13Excellence Cluster 'Origin and Structure of the Universe', Garching, Germany, 14Joint Institute of Nuclear Research, Dubna, Russia, 15Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, Catania, Italy, 16LIP-Laboratório de Instrumentação e Física Experimental de Partículas, Portugal, 17Physik Department E12, Technische Universität München, Germany, 18Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 19Technische Universität Darmstadt, Germany, 20LabCAF. F. Física, Univ. de Santiago de Compostela, Spain, 21Physik Department E12, Technische Universität München, Germany, 22Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 23Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 24Technische Universität Darmstadt, Germany, 25Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 26Technische Universität Darmstadt, Germany, 27GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 28Institut de Physique Nucléaire, CNRS/IN2P3 - Université Paris Sud, Orsay Cedex, France, 29GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 30Joint Institute of Nuclear Research, Dubna, Russia, 31Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Italy, 32Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 33Physik Department E12, Technische Universität München, Germany, 34Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, 35Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 36GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 37GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 38GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 39Technische Universität Darmstadt, Germany, 40Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, 41Nuclear Physics Institute, Academy of Sciences of Czech Republic, Czech Republic, 42Nuclear Physics Institute, Academy of Sciences of Czech Republic, Czech Republic, 43Physik Department E12, Technische Universität München, Germany, 44Smoluchowski Institute of Physics, Jagiellonian University of Cracow, Poland, 45II. Physikalisches Institut, Justus Liebig Universität Giessen, Germany, 46Nuclear Physics Institute, Academy of Sciences of Czech Republic, Czech Republic, 47Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 48Joint Institute of Nuclear Research, Dubna, Russia, 49Excellence Cluster 'Origin and Structure of the Universe', Garching, Germany, 50GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 51Excellence Cluster 'Origin and Structure of the Universe', Garching, Germany, 52Institute of Theoretical and Experimental Physics, Russia, 53Institut de Physique Nucléaire, CNRS/IN2P3 - Université Paris Sud, Orsay Cedex, France, 54LIP-Laboratório de Instrumentação e Física Experimental de Partículas, Portugal, 55Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 56Physik Department E12, Technische Universität München, Germany, 57LIP-Laboratório de Instrumentação e Física Experimental de Partículas, Portugal, 58Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 59II. Physikalisches Institut, Justus Liebig Universität Giessen, Germany, 60Smoluchowski Institute of Physics, Jagiellonian University of Cracow, Poland, 61Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 62Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 63Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, 64Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 65Smoluchowski Institute of Physics, Jagiellonian University of Cracow, Poland, 66Department of Physics, University of Cyprus, Cyprus, 67GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 68Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 69GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 70Smoluchowski Institute of Physics, Jagiellonian University of Cracow, Poland, 71Institut de Physique Nucléaire, CNRS/IN2P3 - Université Paris Sud, Orsay Cedex, France, 72Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 73Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 74Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia, 75Smoluchowski Institute of Physics, Jagiellonian University of Cracow, Poland, 76Lawrence Berkeley National Laboratory, Berkeley, USA, 77GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 78Excellence Cluster 'Origin and Structure of the Universe', Garching, Germany, 79Nuclear Physics Institute, Academy of Sciences of Czech Republic, Czech Republic, 80Dipartimento di Fisica Generale and INFN, Università di Torino, Italy, 81II. Physikalisches Institut, Justus Liebig Universität Giessen, Germany, 82Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 83Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 84GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 85Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 86Institut für Kernphysik, Goethe-Universität, Frankfurt, Germany, 87Nuclear Physics Institute, Academy of Sciences of Czech Republic, Czech Republic, 88GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 89Smoluchowski Institute of Physics, Jagiellonian University of Cracow, Poland, 90Department of Physics, University of Cyprus, Cyprus, 91Joint Institute of Nuclear Research, Dubna, Russia, 92Nuclear Physics Institute, Academy of Sciences of Czech Republic, Czech Republic, 93Physik Department E12, Technische Universität München, Germany, 94Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, 95Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany, 96GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany, 97Joint Institute of Nuclear Research, Dubna, Russia

We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of $3.5$ GeV based on data measured with HADES. The exclusive channels $pp \rightarrow np\pi^{+}$ and $pp \rightarrow pp\pi^{0}$ as well as $pp \rightarrow ppe^{+}e^{-}$ are studied simultaneously for the first time. Read More

We present a search for the e+e- decay of a hypothetical dark photon, also names U vector boson, in inclusive dielectron spectra measured by HADES in the p (3.5 GeV) + p, Nb reactions, as well as the Ar (1.756 GeV/u) + KCl reaction. Read More

A high-statistic data sample of Ar(1.76 AGeV)+KCl events recorded with HADES is used to search for a hypertriton signal. An upper production limit per centrality-triggered event of $1. Read More

We report on the realization of a double barrier resonant tunneling diode for cavity polaritons, by lateral patterning of a one-dimensional cavity. Sharp transmission resonances are demonstrated when sending a polariton flow onto the device. We use a non-resonant beam can be used as an optical gate and control the device transmission. Read More

Data on inclusive pion and eta production measured with the dielectron spectrometer HADES in the reaction p+93Nb at a kinetic beam energy of 3.5 GeV are presented. Our results, obtained with the photon conversion method, supplement the rather sparse information on neutral meson production in proton-nucleus reactions existing for this bombarding energy regime. Read More

The reaction p(@3.5\,GeV)+p -> p+\Lambda + K^+ can be studied to search for the existence of kaonic bound states like ppK^- leading to this final state. This effort has been motivated by the assumption that in p+p collisions the \Lambda(1405) resonance can act as a doorway to the formation of the kaonic bound states. Read More

The running of the effective electromagnetic coupling is for many electroweak observables the dominant correction. It plays an important role for deriving constraints on the Standard Model in the context of electroweak precision measurements. We compute the four-loop QED corrections to the running of the effective electromagnetic coupling and perform a numerical evaluation of the different gauge invariant subsets. Read More

We report on a new mechanism of giant phase modulation. The phenomenon arises when a dispersed photonic mode (slow light) strongly couples to an excitonic resonance. In such a case, even a small amount of optically injected carriers creates a potential barrier for the propagating exciton-polariton which provokes a considerable phase shift. Read More

We study the implications on compact star properties of a soft nuclear equation of state determined from kaon production at subthreshold energies in heavy-ion collisions. On one hand, we apply these results to study radii and moments of inertia of light neutron stars. Heavy-ion data provides constraints on nuclear matter at densities relevant for those stars and, in particular, to the density dependence of the symmetry energy of nuclear matter. Read More

We present an analysis of the Lambda(1405) resonance produced in the reaction p+p->Sigma^{pm}+pi^{mp}+K+p at 3.5 GeV kinetic beam energy measured with HADES at GSI. The two charged decay channels Lambda(1405) -> Sigma^{\pm}+pi^{\mp} have been reconstructed for the first time in p+p collisions. Read More

In this paper we compute the four-loop corrections to the QED photon self-energy Pi(Q^2) in the two limits of q=0 and Q^2->infinity. These results are used to explicitly construct the conversion relations between the QED charge renormalized in on-shell(OS) and MSbar scheme. Using these relations and results of Baikov et al. Read More

We present data on dielectron emission in proton induced reactions on a Nb target at 3.5 GeV kinetic beam energy measured with HADES installed at GSI. The data represent the first high statistics measurement of proton-induced dielectron radiation from cold nuclear matter in a kinematic regime, where strong medium effects are expected. Read More

Data on inclusive dielectron production are presented for the reaction p+p at 2.2 GeV measured with the High Acceptance DiElectron Spectrometer (HADES). Our results supplement data obtained earlier in this bombarding energy regime by DLS and HADES. Read More

We present measurements of exclusive \pi^{+,0} and \eta\ production in pp reactions at 1.25 GeV and 2.2 GeV beam kinetic energy in hadron and dielectron channels. Read More

We study the production of Sigma^+-pi^+-pK^+ particle quartets in p+p reactions at 3.5 GeV kinetic beam energy. The data were taken with the HADES experiment at GSI. Read More

The aim of the present analysis is to determine the relative production cross sections of the $\Lambda$(1405) and $\Sigma(1385)^{0}$ resonances in p+p collisions at E$_{kin}$=3.5 GeV measured with HADES. Upper and lower limits have been determined for the ratio $\sigma_{(\Sigma(1385)^{0}+p+K^{+})}/\sigma_{(\Lambda(1405)+p+K^{+})}=0. Read More

2012Jan
Authors: LHC Higgs Cross Section Working Group, S. Dittmaier1, C. Mariotti2, G. Passarino3, R. Tanaka4, S. Alekhin, J. Alwall, E. A. Bagnaschi, A. Banfi, J. Blumlein, S. Bolognesi, N. Chanon, T. Cheng, L. Cieri, A. M. Cooper-Sarkar, M. Cutajar, S. Dawson, G. Davies, N. De Filippis, G. Degrassi, A. Denner, D. D'Enterria, S. Diglio, B. Di Micco, R. Di Nardo, R. K. Ellis, A. Farilla, S. Farrington, M. Felcini, G. Ferrera, M. Flechl, D. de Florian, S. Forte, S. Ganjour, M. V. Garzelli, S. Gascon-Shotkin, S. Glazov, S. Goria, M. Grazzini, J. -Ph. Guillet, C. Hackstein, K. Hamilton, R. Harlander, M. Hauru, S. Heinemeyer, S. Hoche, J. Huston, C. Jackson, P. Jimenez-Delgado, M. D. Jorgensen, M. Kado, S. Kallweit, A. Kardos, N. Kauer, H. Kim, M. Kovac, M. Kramer, F. Krauss, C. -M. Kuo, S. Lehti, Q. Li, N. Lorenzo, F. Maltoni, B. Mellado, S. O. Moch, A. Muck, M. Muhlleitner, P. Nadolsky, P. Nason, C. Neu, A. Nikitenko, C. Oleari, J. Olsen, S. Palmer, S. Paganis, C. G. Papadopoulos, T . C. Petersen, F. Petriello, F. Petrucci, G. Piacquadio, E. Pilon, C. T. Potter, J. Price, I. Puljak, W. Quayle, V. Radescu, D. Rebuzzi, L. Reina, J. Rojo, D. Rosco, G. P. Salam, A. Sapronov, J. Schaarschmidt, M. Schonherr, M. Schumacher, F. Siegert, P. Slavich, M. Spira, I. W. Stewart, W. J. Stirling, F. Stockli, C. Sturm, F. J. Tackmann, R. S. Thorne, D. Tommasini, P. Torrielli, F. Tramontano, Z. Trocsanyi, M. Ubiali, S. Uccirati, M. Vazquez Acosta, T. Vickey, A. Vicini, W. J. Waalewijn, D. Wackeroth, M. Warsinsky, M. Weber, M. Wiesemann, G. Weiglein, J. Yu, G. Zanderighi
Affiliations: 1eds., 2eds., 3eds., 4eds.

This Report summarises the results of the second year's activities of the LHC Higgs Cross Section Working Group. The main goal of the working group was to present the state of the art of Higgs Physics at the LHC, integrating all new results that have appeared in the last few years. The first working group report Handbook of LHC Higgs Cross Sections: 1. Read More

2011Dec
Affiliations: 1HADES Collaboration, 2HADES Collaboration, 3HADES Collaboration, 4HADES Collaboration, 5HADES Collaboration, 6HADES Collaboration, 7HADES Collaboration, 8HADES Collaboration, 9HADES Collaboration, 10HADES Collaboration, 11HADES Collaboration, 12HADES Collaboration, 13HADES Collaboration, 14HADES Collaboration, 15HADES Collaboration, 16HADES Collaboration, 17HADES Collaboration, 18HADES Collaboration, 19HADES Collaboration, 20HADES Collaboration, 21HADES Collaboration, 22HADES Collaboration, 23HADES Collaboration, 24HADES Collaboration, 25HADES Collaboration, 26HADES Collaboration, 27HADES Collaboration, 28HADES Collaboration, 29HADES Collaboration, 30HADES Collaboration, 31HADES Collaboration, 32HADES Collaboration, 33HADES Collaboration, 34HADES Collaboration, 35HADES Collaboration, 36HADES Collaboration, 37HADES Collaboration, 38HADES Collaboration, 39HADES Collaboration, 40HADES Collaboration, 41HADES Collaboration, 42HADES Collaboration, 43HADES Collaboration, 44HADES Collaboration, 45HADES Collaboration, 46HADES Collaboration, 47HADES Collaboration, 48HADES Collaboration, 49HADES Collaboration, 50HADES Collaboration, 51HADES Collaboration, 52HADES Collaboration, 53HADES Collaboration, 54HADES Collaboration, 55HADES Collaboration, 56HADES Collaboration, 57HADES Collaboration, 58HADES Collaboration, 59HADES Collaboration, 60HADES Collaboration, 61HADES Collaboration, 62HADES Collaboration, 63HADES Collaboration, 64HADES Collaboration, 65HADES Collaboration, 66HADES Collaboration, 67HADES Collaboration, 68HADES Collaboration, 69HADES Collaboration, 70HADES Collaboration, 71HADES Collaboration, 72HADES Collaboration, 73HADES Collaboration, 74HADES Collaboration, 75HADES Collaboration, 76HADES Collaboration, 77HADES Collaboration, 78HADES Collaboration, 79HADES Collaboration, 80HADES Collaboration, 81HADES Collaboration, 82HADES Collaboration, 83HADES Collaboration, 84HADES Collaboration, 85HADES Collaboration, 86HADES Collaboration, 87HADES Collaboration, 88HADES Collaboration, 89HADES Collaboration, 90HADES Collaboration, 91HADES Collaboration, 92HADES Collaboration, 93HADES Collaboration, 94HADES Collaboration, 95HADES Collaboration, 96HADES Collaboration, 97HADES Collaboration, 98HADES Collaboration, 99HADES Collaboration, 100HADES Collaboration, 101HADES Collaboration

We present the inclusive invariant-mass, transverse momentum and rapidity distributions of dielectrons (e$^{+}$e$^{-}$ pairs) in p+p interactions at 3.5 GeV beam kinetic energy. In the vector-meson mass region, a distinct peak corresponding to direct $\omega$ decays is reconstructed with 2% mass resolution. Read More

State-of-the-art predictions for the Higgs-boson production cross section via gluon fusion and for all relevant Higgs-boson decay channels are presented in the presence of a fourth Standard-Model-like fermion generation. The qualitative features of the most important differences to the genuine Standard Model are pointed out, and the use of the available tools for the predictions is described. For a generic mass scale of 400-600 GeV in the fourth generation explicit numerical results for the cross section and decay widths are presented, revealing extremely large electroweak radiative corrections, e. Read More

Measurements of kaon production at subthreshold energies in heavy-ion collisions point to a soft nuclear equation-of-state for densities up to 2-3 times nuclear matter saturation density. We apply these results to study the implications on compact star properties, especially in the context of the recent measurement of the two solar mass pulsar PSR J1614-2230. The implications are two-fold: Firstly, the heavy-ion results constrain nuclear matter at densities relevant to light neutron stars. Read More

We report on the first realistic \emph{ab initio} calculation of a hadronic weak decay, that of the amplitude $A_2$ for a kaon to decay into two \pi-mesons with isospin 2. We find Re$A_2=(1.436\pm 0. Read More