N. Armesto - Santiago de Compostela University

N. Armesto
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Name
N. Armesto
Affiliation
Santiago de Compostela University
City
Santiago de Compostela
Country
Spain

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High Energy Physics - Phenomenology (44)
 
Nuclear Theory (28)
 
High Energy Physics - Experiment (19)
 
Nuclear Experiment (14)
 
Physics - Accelerator Physics (2)
 
Physics - Instrumentation and Detectors (1)

Publications Authored By N. Armesto

The unique physics opportunities accessible with nuclear collisions at the CERN Future Circular Collider (FCC) are summarized. Lead-lead (PbPb) and proton-lead (pPb) collisions at $\sqrt{s_{NN}}$ = 39 and 63 TeV respectively with $\mathcal{L}_{int}$ = 33 nb$^{-1}$ and 8 pb$^{-1}$ monthly integrated luminosities, will provide unprecedented experimental conditions to study quark-gluon matter at temperatures ${\cal O}$(1 GeV). The following topics are succinctly discussed: (i) charm-quark densities thrice larger than at the LHC, leading to direct heavy-quark impact in the bulk QGP properties, (ii) quarkonia, including $\Upsilon(1S)$, melting at temperatures up to five times above the QCD critical temperature, (iii) access to initial-state nuclear parton distributions (nPDF) at fractional momenta as low as $x\approx 10^{-7}$, (iv) availability of $5\cdot 10^5$ top-quark pairs per run to study the high-$x$ gluon nPDF and the energy loss properties of boosted colour-antennas, (v) study of possible Higgs boson suppression in the QGP, and (vi) high-luminosity $\gamma\gamma$ (ultraperipheral) collisions at c. Read More

We consider, for the first time, correlations between produced quarks in p-A collisions in the framework of the Color Glass Condensate. We find a quark-quark ridge that shows a dip at $\Delta\eta\sim 2$ relative to the gluon-gluon ridge. The origin of this dip is the short range (in rapidity) Pauli blocking experienced by quarks in the wave function of the incoming projectile. Read More

An updated analysis regarding the expected nuclear PDF constraints from the future Large Hadron Electron Collider (LHeC) experiment is presented. The new study is based on a more flexible small-$x$ parametrization which provides less biased uncertainty estimates in the region where there are currently no data constraints. The effect of the LHeC is quantified by directly including a sample of pseudodata according to the expected precision of this planned experiment. Read More

The central goal of jet quenching studies in high-energy nuclear collisions is the characterization of those QCD medium properties that are accessible by these probes. Most of the discussion in the last years has been focused on the determination of the jet quenching parameter, $\hat q$. We present here an extraction of this parameter using data of inclusive particle suppression at RHIC and LHC energies for different centralities. Read More

The Future Circular Collider (FCC) Study is aimed at assessing the physics potential and the technical feasibility of a new collider with centre-of-mass energies, in the hadron-hadron collision mode, seven times larger than the nominal LHC energies. Operating such machine with heavy ions is an option that is being considered in the accelerator design studies. It would provide, for example, Pb-Pb and p-Pb collisions at sqrt{s_NN} = 39 and 63 TeV, respectively, per nucleon-nucleon collision, with integrated luminosities above 30 nb^-1 per month for Pb-Pb. Read More

The Future Circular Collider is a new proposed collider at CERN with centre-of-mass energies around 100 TeV in the pp mode. Ongoing studies aim at assessing its physics potential and technical feasibility. Here we focus on updates in physics opportunities accessible in pA and AA collisions not covered in previous Quark Matter contributions, including Quark-Gluon Plasma and gluon saturation studies, novel hard probes of QCD matter, and photon-induced collisions. Read More

The description of the modifications of the coherence pattern in a parton shower, in the presence of a QGP, has been actively addressed in recent studies. Among the several achievements, finite energy corrections, transverse momentum broadening due to medium interactions and interference effects between successive emissions have been extensively improved as they seem to be essential features for a correct description of the results obtained in heavy-ion collisions. In this work, based on the insights of our previous work [1], we explore the physical interplay between broadening and decoherence, by generalising previous studies of medium-modifications of the antenna spectrum [2, 3, 4] - so far restricted to the case where transverse motion is neglected. Read More

We report on an analysis of the impact of available experimental data on hard processes in proton-lead collisions during Run I at the Large Hadron Collider on nuclear modifications of parton distribution functions. Our analysis is restricted to the EPS09 and DSSZ global fits. The measurements that we consider comprise production of massive gauge bosons, jets, charged hadrons and pions. Read More

We explore the quark mass effects on inclusive hadron production in proton-nucleus collisions at high energies. We consider two processes. First, we compute the single inclusive cross-section for production of hadrons with open heavy flavour in the proton forward direction at leading order. Read More

We study exclusive dijet production in coherent diffractive processes in deep inelastic scattering and real (and virtual) photon-hadron ($\gamma^{(*)}$-h) collisions in the Color Glass Condensate formalism at leading order. We show that the diffractive dijet cross section is sensitive to the color-dipole orientation in the transverse plane, and is a good probe of possible correlations between the $q\bar{q}$-dipole transverse separation vector $\r$ and the dipole impact parameter $\b$. We also investigate the diffractive dijet azimuthal angle correlations and $t$-distributions in $\gamma^{(*)}$-h collisions and show that they are sensitive to gluon saturation effects in the small-$x$ region. Read More

We present an overview of the results obtained in pPb and PbPb collisions at the Large Hadron Collider during Run 1. We first discuss the results for global characteristics: cross sections, hadron multiplicities, azimuthal asymmetries, correlations at low transverse momentum, hadrochemistry, and femtoscopy. We then review hard and electromagnetic probes: particles with high transverse momentum, jets, heavy quarks, quarkonium, electroweak bosons and high transverse momentum photons, low transverse momentum photons and dileptons, and ultraperipheral collisions. Read More

We point out that current calculations of inclusive two-particle correlations in p-A collisions based on the Color Glass Condensate approach exhibit a contribution from Hanbury-Brown-Twiss correlations. These HBT correlations are quite distinct from the standard ones, in that they are apparent for particles widely separated in rapidity. The transverse size of the emitter which is reflected in these correlations is the gluonic size of the proton. Read More

The Large Hadron Electron Collider (LHeC) project is the proposal to use the existing LHC proton/ion beams and construct a new electron beam line to perform high-energy electron-proton/ion collisions. In this talk, we consider some of the physics topics that could be studied in the electron-ion mode. In particular, we estimate how much the current nuclear parton distribution fits could be improved with the deeply inelastic scattering measurements at the LHeC by including pseudodata into a global analysis. Read More

Ultra-relativistic heavy-ion collisions are a window of opportunity to study QCD matter under extreme conditions of temperature and density, such as the quark-gluon plasma. Among the several possibilities, the study of jet quenching - generic name given to in-medium energy loss modifications of the parton branching - is a powerful tool to assess the properties of this new state of matter. The description of the parton shower is very well understood in vacuum (controlled reference) and medium-induced modifications of this process can be experimentally accessed through jet measurements. Read More

We extend the study of corrections to the eikonal approximation that was initiated in Ref. \cite{Altinoluk:2014oxa} to higher orders. These corrections associated with the finite width of the target are investigated and the gluon propagator in background field is calculated at next-to-next-to-eikonal accuracy. Read More

We point out that Bose enhancement in a hadronic wave function generically leads to correlations between produced particles. We show explicitly, by calculating the projectile density matrix in the Color Glass Condensate approach to high-energy hadronic collisions, that the Bose enhancement of gluons in the projectile leads to azimuthal collimation of long range rapidity correlations of the produced particles, the so-called ridge correlations. Read More

Centrality selection has been observed to have a large effect on jet observables in pPb collisions at the Large Hadron Collider, stronger than that predicted by the nuclear modification of parton densities. We study to which extent simple considerations of energy-momentum conservation between the hard process and the underlying event affect jets observables in such collisions. We develop a simplistic approach that considers first the production of jets in a pp collision as described by PYTHIA. Read More

We reconsider the perturbative next-to-leading calculation of the single inclusive hadron production in the framework of the hybrid formalism, applied to hadron production in proton-nucleus collisions. Our analysis, performed in the wave function approach, differs from the previous works in three points. First, we are careful to specify unambiguously the rapidity interval that has to be included in the evolution of the leading-order eikonal scattering amplitude. Read More

The parton branching process is known to be modified in the presence of a medium. Colour decoherence processes are known to determine the process of energy loss when the density of the medium is large enough to break the correlations between partons emitted from the same parent. In order to improve existing calculations that consider eikonal trajectories for both the emitter and the hardest emitted parton, we provide in this work, the calculation of all finite energy corrections for the gluon radiation off a quark in a QCD medium that exist in the small angle approximation and for static scattering centres. Read More

The Future Circular Collider (FCC) design study is aimed at assessing the physics potential and the technical feasibility of a new collider with centre-of-mass energies, in the hadron-hadron collision mode including proton and nucleus beams, more than seven-times larger than the nominal LHC energies. An electron-positron collider in the same tunnel is also considered as an intermediate step, which would provide the electron-hadron option in the long term. First ideas on the physics opportunities with heavy ions at the FCC are presented, covering the physics of Quark-Gluon Plasma, gluon saturation, photon-induced collisions, as well as connections with ultra-high-energy cosmic rays. Read More

We confront saturation-based results for diffractive $\psi(2s)$ and $\rho$ production at HERA and $J/\psi$ photoproduction with all available data including recent ones from HERA, ALICE and LHCb, finding a good agreement. We show that the $t$-distribution of differential cross-section of photoproduction of vector mesons offers a unique opportunity to discriminate among saturation and non-saturation models. This is due to emergence of a pronounced dip (or multiple dips) in the $t$-distribution of diffractive photoproduction of vector mesons at relatively large, but potentially accessible $|t|$ that can be traced back to the unitarity features of colour dipole amplitude in the saturation regime. Read More

We derive the in-medium gluon radiation spectrum off a quark within the path integral formalism at finite energies, including all next-to-eikonal corrections in the propagators of quarks and gluons. Results are computed for finite formation times, including interference with vacuum amplitudes. By rewriting the medium averages in a convenient manner we present the spectrum in terms of dipole cross sections and a colour decoherence parameter with the same physical origin as that found in previous studies of the antenna radiation. Read More

In this work we improve existing calculations of radiative energy loss by computing corrections that implement energy-momentum conservation, previously only implemented a posteriori, in a rigorous way. Using the path-integral formalism, we compute in-medium splittings allowing transverse motion of all particles in the emission process, thus relaxing the assumption that only the softest particle is permitted such movement. This work constitutes the extension of the computation carried out for x$\rightarrow$1 in Phys. Read More

We present a new method to systematically include corrections to the eikonal approximation in the background field formalism. Specifically, we calculate the subleading, power-suppressed corrections due to the finite width of the target or the finite energy of the projectile. Such power-suppressed corrections involve Wilson lines decorated by gradients of the background field - thus related to the density - of the target. Read More

We extend the analysis of KLWMIJ evolution in terms of QCD Reggeon fields beyond leading order in the $1/N_c$ expansion. We show that there is only one type of corrections to the leading order Hamiltonian discussed in \cite{last}. These are terms linear in original Reggeons and quadratic in conjugate Reggeon operators. Read More

We systematically study exclusive diffractive (photo) production of vector mesons ($J/\psi$, $\psi(2s)$, $\phi$ and $\rho$) off protons in high-energy collisions and investigate whether the production is a sensitive probe of gluon saturation. We confront saturation-based results for diffractive $\psi(2s)$ and $\rho$ production at HERA and $J/\psi$ photoproduction with all available data including recent ones from HERA, ALICE and LHCb, finding good agreement. In particular, we show that the $t$-distribution of differential cross sections of photoproduction of vector mesons offers a unique opportunity to discriminate among saturation and non-saturation models. Read More

New hard-scattering measurements from the LHC proton-lead run have the potential to provide important constraints on the nuclear parton distributions and thus contributing to a better understanding of the initial state in heavy ion collisions. In order to quantify these constraints, as well as to assess the compatibility with available nuclear data from fixed target experiments and from RHIC, the traditional strategy is to perform a global fit of nuclear PDFs. This procedure is however time consuming and technically challenging, and moreover can only be performed by the PDF fitters themselves. Read More

In this work we investigate medium modifications to the interference pattern between initial and final state radiation. We compute single gluon production off a highly energetic parton that undergoes a hard scattering and subsequently crosses a dense QCD medium of finite size. We extend our previous studies obtained at first order in opacity by providing general results for multiple soft scatterings and their specific formulation within the harmonic oscillator approximation. Read More

We study the prospects for constraining the nuclear parton distribution functions by small-x deep inelastic scattering. Performing a global fit of nuclear parton distribution functions including a sample of pseudodata representing expected measurements at the planned LHeC collider, we demonstrate that the accuracy of the present nuclear parton distributions could be be improved substantially. We also discuss the impact of flavour-tagged data. Read More

This White Paper presents the science case of an Electron-Ion Collider (EIC), focused on the structure and interactions of gluon-dominated matter, with the intent to articulate it to the broader nuclear science community. It was commissioned by the managements of Brookhaven National Laboratory (BNL) and Thomas Jefferson National Accelerator Facility (JLab) with the objective of presenting a summary of scientific opportunities and goals of the EIC as a follow-up to the 2007 NSAC Long Range plan. This document is a culmination of a community-wide effort in nuclear science following a series of workshops on EIC physics and, in particular, the focused ten-week program on "Gluons and quark sea at high energies" at the Institute for Nuclear Theory in Fall 2010. Read More

2012Nov
Authors: J. L. Abelleira Fernandez, C. Adolphsen, P. Adzic, A. N. Akay, H. Aksakal, J. L. Albacete, B. Allanach, S. Alekhin, P. Allport, V. Andreev, R. B. Appleby, E. Arikan, N. Armesto, G. Azuelos, M. Bai, D. Barber, J. Bartels, O. Behnke, J. Behr, A. S. Belyaev, I. Ben-Zvi, N. Bernard, S. Bertolucci, S. Bettoni, S. Biswal, J. Blümlein, H. Böttcher, A. Bogacz, C. Bracco, J. Bracinik, G. Brandt, H. Braun, S. Brodsky, O. Brüning, E. Bulyak, A. Buniatyan, H. Burkhardt, I. T. Cakir, O. Cakir, R. Calaga, A. Caldwell, V. Cetinkaya, V. Chekelian, E. Ciapala, R. Ciftci, A. K. Ciftci, B. A. Cole, J. C. Collins, O. Dadoun, J. Dainton, A. De. Roeck, D. d'Enterria, P. DiNezza, M. D'Onofrio, A. Dudarev, A. Eide, R. Enberg, E. Eroglu, K. J. Eskola, L. Favart, M. Fitterer, S. Forte, A. Gaddi, P. Gambino, H. García Morales, T. Gehrmann, P. Gladkikh, C. Glasman, A. Glazov, R. Godbole, B. Goddard, T. Greenshaw, A. Guffanti, V. Guzey, C. Gwenlan, T. Han, Y. Hao, F. Haug, W. Herr, A. Hervé, B. J. Holzer, M. Ishitsuka, M. Jacquet, B. Jeanneret, E. Jensen, J. M. Jimenez, J. M. Jowett, H. Jung, H. Karadeniz, D. Kayran, A. Kilic, K. Kimura, R. Klees, M. Klein, U. Klein, T. Kluge, F. Kocak, M. Korostelev, A. Kosmicki, P. Kostka, H. Kowalski, M. Kraemer, G. Kramer, D. Kuchler, M. Kuze, T. Lappi, P. Laycock, E. Levichev, S. Levonian, V. N. Litvinenko, A. Lombardi, J. Maeda, C. Marquet, B. Mellado, K. H. Mess, A. Milanese, J. G. Milhano, S. Moch, I. I. Morozov, Y. Muttoni, S. Myers, S. Nandi, Z. Nergiz, P. R. Newman, T. Omori, J. Osborne, E. Paoloni, Y. Papaphilippou, C. Pascaud, H. Paukkunen, E. Perez, T. Pieloni, E. Pilicer, B. Pire, R. Placakyte, A. Polini, V. Ptitsyn, Y. Pupkov, V. Radescu, S. Raychaudhuri, L. Rinolfi, E. Rizvi, R. Rohini, J. Rojo, S. Russenschuck, M. Sahin, C. A. Salgado, K. Sampei, R. Sassot, E. Sauvan, M. Schaefer, U. Schneekloth, T. Schörner-Sadenius, D. Schulte, A. Senol, A. Seryi, P. Sievers, A. N. Skrinsky, W. Smith, D. South, H. Spiesberger, A. M. Stasto, M. Strikman, M. Sullivan, S. Sultansoy, Y. P. Sun, B. Surrow, L. Szymanowski, P. Taels, I. Tapan, T. Tasci, E. Tassi, H. Ten. Kate, J. Terron, H. Thiesen, L. Thompson, P. Thompson, K. Tokushuku, R. Tomás García, D. Tommasini, D. Trbojevic, N. Tsoupas, J. Tuckmantel, S. Turkoz, T. N. Trinh, K. Tywoniuk, G. Unel, T. Ullrich, J. Urakawa, P. VanMechelen, A. Variola, R. Veness, A. Vivoli, P. Vobly, J. Wagner, R. Wallny, S. Wallon, G. Watt, C. Weiss, U. A. Wiedemann, U. Wienands, F. Willeke, B. -W. Xiao, V. Yakimenko, A. F. Zarnecki, Z. Zhang, F. Zimmermann, R. Zlebcik, F. Zomer

The present note relies on the recently published conceptual design report of the LHeC and extends the first contribution to the European strategy debate in emphasising the role of the LHeC to complement and complete the high luminosity LHC programme. The brief discussion therefore focuses on the importance of high precision PDF and $\alpha_s$ determinations for the physics beyond the Standard Model (GUTs, SUSY, Higgs). Emphasis is also given to the importance of high parton density phenomena in nuclei and their relevance to the heavy ion physics programme at the LHC. Read More

2012Nov
Authors: J. L. Abelleira Fernandez, C. Adolphsen, P. Adzic, A. N. Akay, H. Aksakal, J. L. Albacete, B. Allanach, S. Alekhin, P. Allport, V. Andreev, R. B. Appleby, E. Arikan, N. Armesto, G. Azuelos, M. Bai, D. Barber, J. Bartels, O. Behnke, J. Behr, A. S. Belyaev, I. Ben-Zvi, N. Bernard, S. Bertolucci, S. Bettoni, S. Biswal, J. Blümlein, H. Böttcher, A. Bogacz, C. Bracco, J. Bracinik, G. Brandt, H. Braun, S. Brodsky, O. Brüning, E. Bulyak, A. Buniatyan, H. Burkhardt, I. T. Cakir, O. Cakir, R. Calaga, A. Caldwell, V. Cetinkaya, V. Chekelian, E. Ciapala, R. Ciftci, A. K. Ciftci, B. A. Cole, J. C. Collins, O. Dadoun, J. Dainton, A. De. Roeck, D. d'Enterria, P. DiNezza, M. D'Onofrio, A. Dudarev, A. Eide, R. Enberg, E. Eroglu, K. J. Eskola, L. Favart, M. Fitterer, S. Forte, A. Gaddi, P. Gambino, H. García Morales, T. Gehrmann, P. Gladkikh, C. Glasman, A. Glazov, R. Godbole, B. Goddard, T. Greenshaw, A. Guffanti, V. Guzey, C. Gwenlan, T. Han, Y. Hao, F. Haug, W. Herr, A. Hervé, B. J. Holzer, M. Ishitsuka, M. Jacquet, B. Jeanneret, E. Jensen, J. M. Jimenez, J. M. Jowett, H. Jung, H. Karadeniz, D. Kayran, A. Kilic, K. Kimura, R. Klees, M. Klein, U. Klein, T. Kluge, F. Kocak, M. Korostelev, A. Kosmicki, P. Kostka, H. Kowalski, M. Kraemer, G. Kramer, D. Kuchler, M. Kuze, T. Lappi, P. Laycock, E. Levichev, S. Levonian, V. N. Litvinenko, A. Lombardi, J. Maeda, C. Marquet, B. Mellado, K. H. Mess, A. Milanese, J. G. Milhano, S. Moch, I. I. Morozov, Y. Muttoni, S. Myers, S. Nandi, Z. Nergiz, P. R. Newman, T. Omori, J. Osborne, E. Paoloni, Y. Papaphilippou, C. Pascaud, H. Paukkunen, E. Perez, T. Pieloni, E. Pilicer, B. Pire, R. Placakyte, A. Polini, V. Ptitsyn, Y. Pupkov, V. Radescu, S. Raychaudhuri, L. Rinolfi, E. Rizvi, R. Rohini, J. Rojo, S. Russenschuck, M. Sahin, C. A. Salgado, K. Sampei, R. Sassot, E. Sauvan, M. Schaefer, U. Schneekloth, T. Schörner-Sadenius, D. Schulte, A. Senol, A. Seryi, P. Sievers, A. N. Skrinsky, W. Smith, D. South, H. Spiesberger, A. M. Stasto, M. Strikman, M. Sullivan, S. Sultansoy, Y. P. Sun, B. Surrow, L. Szymanowski, P. Taels, I. Tapan, T. Tasci, E. Tassi, H. Ten. Kate, J. Terron, H. Thiesen, L. Thompson, P. Thompson, K. Tokushuku, R. Tomás García, D. Tommasini, D. Trbojevic, N. Tsoupas, J. Tuckmantel, S. Turkoz, T. N. Trinh, K. Tywoniuk, G. Unel, T. Ullrich, J. Urakawa, P. VanMechelen, A. Variola, R. Veness, A. Vivoli, P. Vobly, J. Wagner, R. Wallny, S. Wallon, G. Watt, C. Weiss, U. A. Wiedemann, U. Wienands, F. Willeke, B. -W. Xiao, V. Yakimenko, A. F. Zarnecki, Z. Zhang, F. Zimmermann, R. Zlebcik, F. Zomer

This document provides a brief overview of the recently published report on the design of the Large Hadron Electron Collider (LHeC), which comprises its physics programme, accelerator physics, technology and main detector concepts. The LHeC exploits and develops challenging, though principally existing, accelerator and detector technologies. This summary is complemented by brief illustrations of some of the highlights of the physics programme, which relies on a vastly extended kinematic range, luminosity and unprecedented precision in deep inelastic scattering. Read More

Subtraction of the large background in reconstruction is a key ingredient in jet studies in high-energy heavy-ion collisions at RHIC and the LHC. Here we address the question to which extent the most commonly used subtraction techniques are able to eliminate the effects of the background on the most commonly discussed observables at present: single inclusive jet distributions, dijet asymmetry and azimuthal distributions. We consider two different background subtraction methods, an area-based one implemented through the FastJet pack- age and a pedestal subtraction method, that resemble the ones used by the experimental collaborations at the LHC. Read More

Interferences between different emitters in the multi-parton shower is the building block of QCD jet physics in vacuum. The presence of a hot medium made of quarks and gluons is expected to alter this interference pattern. To study such effects, we derive the gluon emission spectrum off an "asymptotic quark" traversing a hot and dense QCD medium at first order in the medium density. Read More

In order to assess the ability of jet observables to constrain the characteristics of the medium produced in heavy-ion collisions at the LHC, we investigate the influence of background subtraction and jet quenching on jet reconstruction, with focus on the dijet asymmetry as currently studied by ATLAS and CMS. Using a toy model, we examine the influence of different background subtraction methods on dijet momentum imbalance and azimuthal distributions. We compare the usual jet-area based background subtraction technique and a variant of the noise-pedestal subtraction method used by CMS. Read More

The color coherence effects in the medium modification to the initial state radiation are studied via a simple setup which allows these effects to be pronounced. The medium-induced gluon radiation spectrum off a hard quark which suffers a highly virtual photon scattering and subsequently crosses a dilute QCD medium of finite size is obtained. The angular distribution of the medium-induced gluon radiation spectrum is modified when the interference contributions between the incoming and outgoing quarks at a finite scattering angle are included. Read More

We study color coherence effects on the medium-induced soft gluon radiation off an asymptotic quark hit by a virtual photon traversing a hot and dense QCD medium. The transverse momentum spectrum of the emitted gluon is computed at 1st order in the opacity expansion. The interference effects between the initial and final state radiation modify the soft gluon spectrum when a finite angle between the incoming and outgoing quarks is considered, presenting a soft divergence. Read More

We investigate the color coherence pattern between initial and final state radiation in the presence of a QCD medium. We derive the medium-induced gluon spectrum of an "asymptotic" parton which suffers a hard scattering and subsequently crosses the medium. The angular distribution of the induced gluon spectrum is modified when one includes interference terms between the incoming and the outgoing parton at finite angle between them. Read More

2012Jun
Authors: J. L. Abelleira Fernandez, C. Adolphsen, A. N. Akay, H. Aksakal, J. L. Albacete, S. Alekhin, P. Allport, V. Andreev, R. B. Appleby, E. Arikan, N. Armesto, G. Azuelos, M. Bai, D. Barber, J. Bartels, O. Behnke, J. Behr, A. S. Belyaev, I. Ben-Zvi, N. Bernard, S. Bertolucci, S. Bettoni, S. Biswal, J. Blümlein, H. Böttcher, A. Bogacz, C. Bracco, G. Brandt, H. Braun, S. Brodsky, O. Brüning, E. Bulyak, A. Buniatyan, H. Burkhardt, I. T. Cakir, O. Cakir, R. Calaga, V. Cetinkaya, E. Ciapala, R. Ciftci, A. K. Ciftci, B. A. Cole, J. C. Collins, O. Dadoun, J. Dainton, A. De. Roeck, D. d'Enterria, A. Dudarev, A. Eide, R. Enberg, E. Eroglu, K. J. Eskola, L. Favart, M. Fitterer, S. Forte, A. Gaddi, P. Gambino, H. García Morales, T. Gehrmann, P. Gladkikh, C. Glasman, R. Godbole, B. Goddard, T. Greenshaw, A. Guffanti, V. Guzey, C. Gwenlan, T. Han, Y. Hao, F. Haug, W. Herr, A. Hervé, B. J. Holzer, M. Ishitsuka, M. Jacquet, B. Jeanneret, J. M. Jimenez, J. M. Jowett, H. Jung, H. Karadeniz, D. Kayran, A. Kilic, K. Kimura, M. Klein, U. Klein, T. Kluge, F. Kocak, M. Korostelev, A. Kosmicki, P. Kostka, H. Kowalski, G. Kramer, D. Kuchler, M. Kuze, T. Lappi, P. Laycock, E. Levichev, S. Levonian, V. N. Litvinenko, A. Lombardi, J. Maeda, C. Marquet, S. J. Maxfield, B. Mellado, K. H. Mess, A. Milanese, S. Moch, I. I. Morozov, Y. Muttoni, S. Myers, S. Nandi, Z. Nergiz, P. R. Newman, T. Omori, J. Osborne, E. Paoloni, Y. Papaphilippou, C. Pascaud, H. Paukkunen, E. Perez, T. Pieloni, E. Pilicer, B. Pire, R. Placakyte, A. Polini, V. Ptitsyn, Y. Pupkov, V. Radescu, S. Raychaudhuri, L. Rinolfi, R. Rohini, J. Rojo, S. Russenschuck, M. Sahin, C. A. Salgado, K. Sampei, R. Sassot, E. Sauvan, U. Schneekloth, T. Schörner-Sadenius, D. Schulte, A. Senol, A. Seryi, P. Sievers, A. N. Skrinsky, W. Smith, H. Spiesberger, A. M. Stasto, M. Strikman, M. Sullivan, S. Sultansoy, Y. P. Sun, B. Surrow, L. Szymanowski, P. Taels, I. Tapan, A. T. Tasci, E. Tassi, H. Ten. Kate, J. Terron, H. Thiesen, L. Thompson, K. Tokushuku, R. Tomás García, D. Tommasini, D. Trbojevic, N. Tsoupas, J. Tuckmantel, S. Turkoz, T. N. Trinh, K. Tywoniuk, G. Unel, J. Urakawa, P. VanMechelen, A. Variola, R. Veness, A. Vivoli, P. Vobly, J. Wagner, R. Wallny, S. Wallon, G. Watt, C. Weiss, U. A. Wiedemann, U. Wienands, F. Willeke, B. -W. Xiao, V. Yakimenko, A. F. Zarnecki, Z. Zhang, F. Zimmermann, R. Zlebcik, F. Zomer

The physics programme and the design are described of a new collider for particle and nuclear physics, the Large Hadron Electron Collider (LHeC), in which a newly built electron beam of 60 GeV, up to possibly 140 GeV, energy collides with the intense hadron beams of the LHC. Compared to HERA, the kinematic range covered is extended by a factor of twenty in the negative four-momentum squared, $Q^2$, and in the inverse Bjorken $x$, while with the design luminosity of $10^{33}$ cm$^{-2}$s$^{-1}$ the LHeC is projected to exceed the integrated HERA luminosity by two orders of magnitude. The physics programme is devoted to an exploration of the energy frontier, complementing the LHC and its discovery potential for physics beyond the Standard Model with high precision deep inelastic scattering measurements. Read More

We present a derivation of the medium-induced gluon radiation spectrum beyond the current limitation of soft gluon emission. Making use of the path integral approach to describe the propagation of high-energy particles inside a medium, we study the limiting case of a hard gluon emission. Analytical and numerical results are presented and discussed within the multiple soft scattering approximation. Read More

2012Mar
Authors: ALICE Collaboration, B. Abelev, J. Adam, D. Adamova, A. M. Adare, M. M. Aggarwal, G. Aglieri Rinella, A. G. Agocs, A. Agostinelli, S. Aguilar Salazar, Z. Ahammed, A. Ahmad Masoodi, N. Ahmad, S. U. Ahn, A. Akindinov, D. Aleksandrov, B. Alessandro, R. Alfaro Molina, A. Alici, A. Alkin, E. Almaraz Avina, J. Alme, T. Alt, V. Altini, S. Altinpinar, I. Altsybeev, C. Andrei, A. Andronic, V. Anguelov, J. Anielski, C. Anson, T. Anticic, F. Antinori, P. Antonioli, L. Aphecetche, H. Appelshauser, N. Arbor, S. Arcelli, A. Arend, N. Armesto, R. Arnaldi, T. Aronsson, I. C. Arsene, M. Arslandok, A. Asryan, A. Augustinus, R. Averbeck, T. C. Awes, J. Aysto, M. D. Azmi, M. Bach, A. Badala, Y. W. Baek, R. Bailhache, R. Bala, R. Baldini Ferroli, A. Baldisseri, A. Baldit, F. Baltasar Dos Santos Pedrosa, J. Ban, R. C. Baral, R. Barbera, F. Barile, G. G. Barnafoldi, L. S. Barnby, V. Barret, J. Bartke, M. Basile, N. Bastid, B. Bathen, G. Batigne, B. Batyunya, C. Baumann, I. G. Bearden, H. Beck, I. Belikov, F. Bellini, R. Bellwied, E. Belmont-Moreno, G. Bencedi, S. Beole, I. Berceanu, A. Bercuci, Y. Berdnikov, D. Berenyi, C. Bergmann, D. Berzano, L. Betev, A. Bhasin, A. K. Bhati, L. Bianchi, N. Bianchi, C. Bianchin, J. Bielcik, J. Bielcikova, S. Bjelogrlic, F. Blanco, F. Blanco, D. Blau, C. Blume, M. Boccioli, N. Bock, A. Bogdanov, H. Boggild, M. Bogolyubsky, L. Boldizsar, M. Bombara, J. Book, H. Borel, A. Borissov, S. Bose, F. Bossu, M. Botje, S. Bottger, B. Boyer, E. Braidot, P. Braun-Munzinger, M. Bregant, T. Breitner, T. A. Browning, M. Broz, R. Brun, E. Bruna, G. E. Bruno, D. Budnikov, H. Buesching, S. Bufalino, K. Bugaiev, O. Busch, Z. Buthelezi, D. Caballero Orduna, D. Caffarri, X. Cai, H. Caines, E. Calvo Villar, P. Camerini, V. Canoa Roman, G. Cara Romeo, W. Carena, F. Carena, N. Carlin Filho, F. Carminati, C. A. Carrillo Montoya, A. Casanova Diaz, J. Castillo Castellanos, J. F. Castillo Hernandez, E. A. R. Casula, V. Catanescu, C. Cavicchioli, J. Cepila, P. Cerello, B. Chang, S. Chapeland, J. L. Charvet, S. Chattopadhyay, S. Chattopadhyay, I. Chawla, M. Cherney, C. Cheshkov, B. Cheynis, E. Chiavassa, V. Chibante Barroso, D. D. Chinellato, P. Chochula, M. Chojnacki, P. Christakoglou, C. H. Christensen, P. Christiansen, T. Chujo, S. U. Chung, C. Cicalo, L. Cifarelli, F. Cindolo, J. Cleymans, F. Coccetti, F. Colamaria, D. Colella, G. Conesa Balbastre, Z. Conesa del Valle, P. Constantin, G. Contin, J. G. Contreras, T. M. Cormier, Y. Corrales Morales, P. Cortese, I. Cortes Maldonado, M. R. Cosentino, F. Costa, M. E. Cotallo, E. Crescio, P. Crochet, E. Cruz Alaniz, E. Cuautle, L. Cunqueiro, A. Dainese, H. H. Dalsgaard, A. Danu, K. Das, I. Das, D. Das, A. Dash, S. Dash, S. De, G. O. V. de Barros, A. De Caro, G. de Cataldo, J. de Cuveland, A. De Falco, D. De Gruttola, H. Delagrange, E. Del Castillo Sanchez, A. Deloff, V. Demanov, N. De Marco, E. Denes, S. De Pasquale, A. Deppman, G. D Erasmo, R. de Rooij, M. A. Diaz Corchero, D. Di Bari, T. Dietel, C. Di Giglio, S. Di Liberto, A. Di Mauro, P. Di Nezza, R. Divia, O. Djuvsland, A. Dobrin, T. Dobrowolski, I. Dominguez, B. Donigus, O. Dordic, O. Driga, A. K. Dubey, L. Ducroux, P. Dupieux, A. K. Dutta Majumdar, M. R. Dutta Majumdar, D. Elia, D. Emschermann, H. Engel, H. A. Erdal, B. Espagnon, M. Estienne, S. Esumi, D. Evans, G. Eyyubova, D. Fabris, J. Faivre, D. Falchieri, A. Fantoni, M. Fasel, R. Fearick, A. Fedunov, D. Fehlker, L. Feldkamp, D. Felea, G. Feofilov, A. Fernandez Tellez, E. G. Ferreiro, A. Ferretti, R. Ferretti, J. Figiel, M. A. S. Figueredo, S. Filchagin, D. Finogeev, F. M. Fionda, E. M. Fiore, M. Floris, S. Foertsch, P. Foka, S. Fokin, E. Fragiacomo, M. Fragkiadakis, U. Frankenfeld, U. Fuchs, C. Furget, M. Fusco Girard, J. J. Gaardhoje, M. Gagliardi, A. Gago, M. Gallio, D. R. Gangadharan, P. Ganoti, C. Garabatos, E. Garcia-Solis, I. Garishvili, J. Gerhard, M. Germain, C. Geuna, A. Gheata, M. Gheata, B. Ghidini, P. Ghosh, P. Gianotti, M. R. Girard, P. Giubellino, E. Gladysz-Dziadus, P. Glassel, R. Gomez, L. H. Gonzalez-Trueba, P. Gonzalez-Zamora, S. Gorbunov, A. Goswami, S. Gotovac, V. Grabski, L. K. Graczykowski, R. Grajcarek, A. Grelli, A. Grigoras, C. Grigoras, V. Grigoriev, A. Grigoryan, S. Grigoryan, B. Grinyov, N. Grion, P. Gros, J. F. Grosse-Oetringhaus, J. -Y. Grossiord, R. Grosso, F. Guber, R. Guernane, C. Guerra Gutierrez, B. Guerzoni, M. Guilbaud, K. Gulbrandsen, T. Gunji, A. Gupta, R. Gupta, H. Gutbrod, O. Haaland, C. Hadjidakis, M. Haiduc, H. Hamagaki, G. Hamar, B. H. Han, L. D. Hanratty, A. Hansen, Z. Harmanova, J. W. Harris, M. Hartig, D. Hasegan, D. Hatzifotiadou, A. Hayrapetyan, S. T. Heckel, M. Heide, H. Helstrup, A. Herghelegiu, G. Herrera Corral, N. Herrmann, K. F. Hetland, B. Hicks, P. T. Hille, B. Hippolyte, T. Horaguchi, Y. Hori, P. Hristov, I. Hrivnacova, M. Huang, S. Huber, T. J. Humanic, D. S. Hwang, R. Ichou, R. Ilkaev, I. Ilkiv, M. Inaba, E. Incani, G. M. Innocenti, P. G. Innocenti, M. Ippolitov, M. Irfan, C. Ivan, V. Ivanov, A. Ivanov, M. Ivanov, O. Ivanytskyi, A. Jacholkowski, P. M. Jacobs, L. Jancurova, H. J. Jang, S. Jangal, M. A. Janik, R. Janik, P. H. S. Y. Jayarathna, S. Jena, R. T. Jimenez Bustamante, L. Jirden, P. G. Jones, H. Jung, A. Jusko, A. B. Kaidalov, V. Kakoyan, S. Kalcher, P. Kalinak, M. Kalisky, T. Kalliokoski, A. Kalweit, K. Kanaki, J. H. Kang, V. Kaplin, A. Karasu Uysal, O. Karavichev, T. Karavicheva, E. Karpechev, A. Kazantsev, U. Kebschull, R. Keidel, M. M. Khan, S. A. Khan, P. Khan, A. Khanzadeev, Y. Kharlov, B. Kileng, M. Kim, J. S. Kim, D. J. Kim, T. Kim, B. Kim, S. Kim, S. H. Kim, D. W. Kim, J. H. Kim, S. Kirsch, I. Kisel, S. Kiselev, A. Kisiel, J. L. Klay, J. Klein, C. Klein-Bosing, M. Kliemant, A. Kluge, M. L. Knichel, A. G. Knospe, K. Koch, M. K. Kohler, A. Kolojvari, V. Kondratiev, N. Kondratyeva, A. Konevskikh, A. Korneev, C. Kottachchi Kankanamge Don, R. Kour, M. Kowalski, S. Kox, G. Koyithatta Meethaleveedu, J. Kral, I. Kralik, F. Kramer, I. Kraus, T. Krawutschke, M. Krelina, M. Kretz, M. Krivda, F. Krizek, M. Krus, E. Kryshen, M. Krzewicki, Y. Kucheriaev, C. Kuhn, P. G. Kuijer, P. Kurashvili, A. Kurepin, A. B. Kurepin, A. Kuryakin, S. Kushpil, V. Kushpil, H. Kvaerno, M. J. Kweon, Y. Kwon, P. Ladron de Guevara, I. Lakomov, R. Langoy, C. Lara, A. Lardeux, P. La Rocca, C. Lazzeroni, R. Lea, Y. Le Bornec, S. C. Lee, K. S. Lee, F. Lefevre, J. Lehnert, L. Leistam, M. Lenhardt, V. Lenti, H. Leon, I. Leon Monzon, H. Leon Vargas, P. Levai, J. Lien, R. Lietava, S. Lindal, V. Lindenstruth, C. Lippmann, M. A. Lisa, L. Liu, P. I. Loenne, V. R. Loggins, V. Loginov, S. Lohn, D. Lohner, C. Loizides, K. K. Loo, X. Lopez, E. Lopez Torres, G. Lovhoiden, X. -G. Lu, P. Luettig, M. Lunardon, J. Luo, G. Luparello, L. Luquin, C. Luzzi, K. Ma, R. Ma, D. M. Madagodahettige-Don, A. Maevskaya, M. Mager, D. P. Mahapatra, A. Maire, M. Malaev, I. Maldonado Cervantes, L. Malinina, D. Mal'Kevich, P. Malzacher, A. Mamonov, L. Manceau, L. Mangotra, V. Manko, F. Manso, V. Manzari, Y. Mao, M. Marchisone, J. Mares, G. V. Margagliotti, A. Margotti, A. Marin, C. A. Marin Tobon, C. Markert, I. Martashvili, P. Martinengo, M. I. Martinez, A. Martinez Davalos, G. Martinez Garcia, Y. Martynov, A. Mas, S. Masciocchi, M. Masera, A. Masoni, L. Massacrier, M. Mastromarco, A. Mastroserio, Z. L. Matthews, A. Matyja, D. Mayani, C. Mayer, J. Mazer, M. A. Mazzoni, F. Meddi, A. Menchaca-Rocha, J. Mercado Perez, M. Meres, Y. Miake, L. Milano, J. Milosevic, A. Mischke, A. N. Mishra, D. Miskowiec, C. Mitu, J. Mlynarz, A. K. Mohanty, B. Mohanty, L. Molnar, L. Montano Zetina, M. Monteno, E. Montes, T. Moon, M. Morando, D. A. Moreira De Godoy, S. Moretto, A. Morsch, V. Muccifora, E. Mudnic, S. Muhuri, H. Muller, M. G. Munhoz, L. Musa, A. Musso, B. K. Nandi, R. Nania, E. Nappi, C. Nattrass, N. P. Naumov, S. Navin, T. K. Nayak, S. Nazarenko, G. Nazarov, A. Nedosekin, M. Nicassio, B. S. Nielsen, T. Niida, S. Nikolaev, V. Nikolic, V. Nikulin, S. Nikulin, B. S. Nilsen, M. S. Nilsson, F. Noferini, P. Nomokonov, G. Nooren, N. Novitzky, A. Nyanin, A. Nyatha, C. Nygaard, J. Nystrand, A. Ochirov, H. Oeschler, S. K. Oh, S. Oh, J. Oleniacz, C. Oppedisano, A. Ortiz Velasquez, G. Ortona, A. Oskarsson, P. Ostrowski, J. Otwinowski, G. Ovrebekk, K. Oyama, K. Ozawa, Y. Pachmayer, M. Pachr, F. Padilla, P. Pagano, G. Paic, F. Painke, C. Pajares, S. K. Pal, S. Pal, A. Palaha, A. Palmeri, V. Papikyan, G. S. Pappalardo, W. J. Park, A. Passfeld, B. Pastircak, D. I. Patalakha, V. Paticchio, A. Pavlinov, T. Pawlak, T. Peitzmann, E. Pereira De Oliveira Filho, D. Peresunko, C. E. Perez Lara, E. Perez Lezama, D. Perini, D. Perrino, W. Peryt, A. Pesci, V. Peskov, Y. Pestov, V. Petracek, M. Petran, M. Petris, P. Petrov, M. Petrovici, C. Petta, S. Piano, A. Piccotti, M. Pikna, P. Pillot, O. Pinazza, L. Pinsky, N. Pitz, F. Piuz, D. B. Piyarathna, M. Ploskon, J. Pluta, T. Pocheptsov, S. Pochybova, P. L. M. Podesta-Lerma, M. G. Poghosyan, K. Polak, B. Polichtchouk, A. Pop, S. Porteboeuf-Houssais, V. Pospisil, B. Potukuchi, S. K. Prasad, R. Preghenella, F. Prino, C. A. Pruneau, I. Pshenichnov, S. Puchagin, G. Puddu, J. Pujol Teixido, A. Pulvirenti, V. Punin, M. Putis, J. Putschke, E. Quercigh, H. Qvigstad, A. Rachevski, A. Rademakers, S. Radomski, T. S. Raiha, J. Rak, A. Rakotozafindrabe, L. Ramello, A. Ramirez Reyes, S. Raniwala, R. Raniwala, S. S. Rasanen, B. T. Rascanu, D. Rathee, K. F. Read, J. S. Real, K. Redlich, P. Reichelt, M. Reicher, R. Renfordt, A. R. Reolon, A. Reshetin, F. Rettig, J. -P. Revol, K. Reygers, L. Riccati, R. A. Ricci, T. Richert, M. Richter, P. Riedler, W. Riegler, F. Riggi, M. Rodriguez Cahuantzi, K. Roed, D. Rohr, D. Rohrich, R. Romita, F. Ronchetti, P. Rosnet, S. Rossegger, A. Rossi, F. Roukoutakis, C. Roy, P. Roy, A. J. Rubio Montero, R. Rui, E. Ryabinkin, A. Rybicki, S. Sadovsky, K. Safarik, R. Sahoo, P. K. Sahu, J. Saini, H. Sakaguchi, S. Sakai, D. Sakata, C. A. Salgado, J. Salzwedel, S. Sambyal, V. Samsonov, X. Sanchez Castro, L. Sandor, A. Sandoval, S. Sano, M. Sano, R. Santo, R. Santoro, J. Sarkamo, E. Scapparone, F. Scarlassara, R. P. Scharenberg, C. Schiaua, R. Schicker, H. R. Schmidt, C. Schmidt, S. Schreiner, S. Schuchmann, J. Schukraft, Y. Schutz, K. Schwarz, K. Schweda, G. Scioli, E. Scomparin, P. A. Scott, R. Scott, G. Segato, I. Selyuzhenkov, S. Senyukov, J. Seo, S. Serci, E. Serradilla, A. Sevcenco, I. Sgura, A. Shabetai, G. Shabratova, R. Shahoyan, N. Sharma, S. Sharma, K. Shigaki, M. Shimomura, K. Shtejer, Y. Sibiriak, M. Siciliano, E. Sicking, S. Siddhanta, T. Siemiarczuk, D. Silvermyr, C. Silvestre, G. Simonetti, R. Singaraju, R. Singh, S. Singha, T. Sinha, B. C. Sinha, B. Sitar, M. Sitta, T. B. Skaali, K. Skjerdal, R. Smakal, N. Smirnov, R. J. M. Snellings, C. Sogaard, R. Soltz, H. Son, M. Song, J. Song, C. Soos, F. Soramel, I. Sputowska, M. Spyropoulou-Stassinaki, B. K. Srivastava, J. Stachel, I. Stan, I. Stan, G. Stefanek, G. Stefanini, T. Steinbeck, M. Steinpreis, E. Stenlund, G. Steyn, D. Stocco, M. Stolpovskiy, K. Strabykin, P. Strmen, A. A. P. Suaide, M. A. Subieta Vasquez, T. Sugitate, C. Suire, M. Sukhorukov, R. Sultanov, M. Sumbera, T. Susa, A. Szanto de Toledo, I. Szarka, A. Szostak, C. Tagridis, J. Takahashi, J. D. Tapia Takaki, A. Tauro, G. Tejeda Munoz, A. Telesca, C. Terrevoli, J. Thader, D. Thomas, R. Tieulent, A. R. Timmins, D. Tlusty, A. Toia, H. Torii, L. Toscano, F. Tosello, D. Truesdale, W. H. Trzaska, T. Tsuji, A. Tumkin, R. Turrisi, T. S. Tveter, J. Ulery, K. Ullaland, J. Ulrich, A. Uras, J. Urban, G. M. Urciuoli, G. L. Usai, M. Vajzer, M. Vala, L. Valencia Palomo, S. Vallero, N. van der Kolk, P. Vande Vyvre, M. van Leeuwen, L. Vannucci, A. Vargas, R. Varma, M. Vasileiou, A. Vasiliev, V. Vechernin, M. Veldhoen, M. Venaruzzo, E. Vercellin, S. Vergara, D. C. Vernekohl, R. Vernet, M. Verweij, L. Vickovic, G. Viesti, O. Vikhlyantsev, Z. Vilakazi, O. Villalobos Baillie, A. Vinogradov, Y. Vinogradov, L. Vinogradov, T. Virgili, Y. P. Viyogi, A. Vodopyanov, S. Voloshin, K. Voloshin, G. Volpe, B. von Haller, D. Vranic, J. Vrlakova, B. Vulpescu, A. Vyushin, B. Wagner, V. Wagner, R. Wan, Y. Wang, D. Wang, Y. Wang, M. Wang, K. Watanabe, J. P. Wessels, U. Westerhoff, J. Wiechula, J. Wikne, M. Wilde, G. Wilk, A. Wilk, M. C. S. Williams, B. Windelband, L. Xaplanteris Karampatsos, H. Yang, S. Yang, S. Yasnopolskiy, J. Yi, Z. Yin, H. Yokoyama, I. -K. Yoo, J. Yoon, W. Yu, X. Yuan, I. Yushmanov, C. Zach, C. Zampolli, S. Zaporozhets, A. Zarochentsev, P. Zavada, N. Zaviyalov, H. Zbroszczyk, P. Zelnicek, I. S. Zgura, M. Zhalov, X. Zhang, D. Zhou, Y. Zhou, F. Zhou, X. Zhu, A. Zichichi, A. Zimmermann, G. Zinovjev, Y. Zoccarato, M. Zynovyev

The ALICE Collaboration has measured inclusive J/psi production in pp collisions at a center of mass energy sqrt(s)=2.76 TeV at the LHC. The results presented in this Letter refer to the rapidity ranges |y|<0. Read More

2011Dec
Authors: ALICE Collaboration, B. Abelev, A. Abrahantes Quintana, D. Adamová, A. M. Adare, M. M. Aggarwal, G. Aglieri Rinella, A. G. Agocs, A. Agostinelli, S. Aguilar Salazar, Z. Ahammed, N. Ahmad, A. Ahmad Masoodi, S. U. Ahn, A. Akindinov, D. Aleksandrov, B. Alessandro, R. Alfaro Molina, A. Alici, A. Alkin, E. Almaráz Aviña, T. Alt, V. Altini, S. Altinpinar, I. Altsybeev, C. Andrei, A. Andronic, V. Anguelov, C. Anson, T. Antičić, F. Antinori, P. Antonioli, L. Aphecetche, H. Appelshäuser, N. Arbor, S. Arcelli, A. Arend, N. Armesto, R. Arnaldi, T. Aronsson, I. C. Arsene, M. Arslandok, A. Asryan, A. Augustinus, R. Averbeck, T. C. Awes, J. Äystö, M. D. Azmi, M. Bach, A. Badalà, Y. W. Baek, R. Bailhache, R. Bala, R. Baldini Ferroli, A. Baldisseri, A. Baldit, F. Baltasar Dos Santos Pedrosa, J. Bán, R. C. Baral, R. Barbera, F. Barile, G. G. Barnaföldi, L. S. Barnby, V. Barret, J. Bartke, M. Basile, N. Bastid, B. Bathen, G. Batigne, B. Batyunya, C. Baumann, I. G. Bearden, H. Beck, I. Belikov, F. Bellini, R. Bellwied, E. Belmont-Moreno, S. Beole, I. Berceanu, A. Bercuci, Y. Berdnikov, D. Berenyi, C. Bergmann, D. Berzano, L. Betev, A. Bhasin, A. K. Bhati, L. Bianchi, N. Bianchi, C. Bianchin, J. Bielčík, J. Bielčíková, A. Bilandzic, F. Blanco, F. Blanco, D. Blau, C. Blume, M. Boccioli, N. Bock, A. Bogdanov, H. Bøggild, M. Bogolyubsky, L. Boldizsár, M. Bombara, J. Book, H. Borel, A. Borissov, C. Bortolin, S. Bose, F. Bossú, M. Botje, S. Böttger, B. Boyer, P. Braun-Munzinger, M. Bregant, T. Breitner, M. Broz, R. Brun, E. Bruna, G. E. Bruno, D. Budnikov, H. Buesching, S. Bufalino, K. Bugaiev, O. Busch, Z. Buthelezi, D. Caffarri, X. Cai, H. Caines, E. Calvo Villar, P. Camerini, V. Canoa Roman, G. Cara Romeo, W. Carena, F. Carena, N. Carlin Filho, F. Carminati, C. A. Carrillo Montoya, A. Casanova Díaz, M. Caselle, J. Castillo Castellanos, J. F. Castillo Hernandez, E. A. R. Casula, V. Catanescu, C. Cavicchioli, J. Cepila, P. Cerello, B. Chang, S. Chapeland, J. L. Charvet, S. Chattopadhyay, S. Chattopadhyay, M. Cherney, C. Cheshkov, B. Cheynis, E. Chiavassa, V. Chibante Barroso, D. D. Chinellato, P. Chochula, M. Chojnacki, P. Christakoglou, C. H. Christensen, P. Christiansen, T. Chujo, S. U. Chung, C. Cicalo, L. Cifarelli, F. Cindolo, J. Cleymans, F. Coccetti, J. -P. Coffin, F. Colamaria, D. Colella, G. Conesa Balbastre, Z. Conesa del Valle, P. Constantin, G. Contin, J. G. Contreras, T. M. Cormier, Y. Corrales Morales, P. Cortese, I. Cortés Maldonado, M. R. Cosentino, F. Costa, M. E. Cotallo, E. Crescio, P. Crochet, E. Cruz Alaniz, E. Cuautle, L. Cunqueiro, A. Dainese, H. H. Dalsgaard, A. Danu, K. Das, D. Das, I. Das, S. Dash, A. Dash, S. De, A. De Azevedo Moregula, G. O. V. de Barros, A. De Caro, G. de Cataldo, J. de Cuveland, A. De Falco, D. De Gruttola, H. Delagrange, E. Del Castillo Sanchez, A. Deloff, V. Demanov, N. De Marco, E. Dénes, S. De Pasquale, A. Deppman, G. D Erasmo, R. de Rooij, D. Di Bari, T. Dietel, C. Di Giglio, S. Di Liberto, A. Di Mauro, P. Di Nezza, R. Divià, Ø. Djuvsland, A. Dobrin, T. Dobrowolski, I. Domínguez, B. Dönigus, O. Dordic, O. Driga, A. K. Dubey, L. Ducroux, P. Dupieux, A. K. Dutta Majumdar, M. R. Dutta Majumdar, D. Elia, D. Emschermann, H. Engel, H. A. Erdal, B. Espagnon, M. Estienne, S. Esumi, D. Evans, G. Eyyubova, D. Fabris, J. Faivre, D. Falchieri, A. Fantoni, M. Fasel, R. Fearick, A. Fedunov, D. Fehlker, L. Feldkamp, D. Felea, G. Feofilov, A. Fernández Téllez, A. Ferretti, R. Ferretti, J. Figiel, M. A. S. Figueredo, S. Filchagin, R. Fini, D. Finogeev, F. M. Fionda, E. M. Fiore, M. Floris, S. Foertsch, P. Foka, S. Fokin, E. Fragiacomo, M. Fragkiadakis, U. Frankenfeld, U. Fuchs, C. Furget, M. Fusco Girard, J. J. Gaardhøje, M. Gagliardi, A. Gago, M. Gallio, D. R. Gangadharan, P. Ganoti, C. Garabatos, E. Garcia-Solis, I. Garishvili, J. Gerhard, M. Germain, C. Geuna, M. Gheata, A. Gheata, B. Ghidini, P. Ghosh, P. Gianotti, M. R. Girard, P. Giubellino, E. Gladysz-Dziadus, P. Glässel, R. Gomez, E. G. Ferreiro, L. H. González-Trueba, P. González-Zamora, S. Gorbunov, A. Goswami, S. Gotovac, V. Grabski, L. K. Graczykowski, R. Grajcarek, A. Grelli, C. Grigoras, A. Grigoras, V. Grigoriev, A. Grigoryan, S. Grigoryan, B. Grinyov, N. Grion, P. Gros, J. F. Grosse-Oetringhaus, J. -Y. Grossiord, R. Grosso, F. Guber, R. Guernane, C. Guerra Gutierrez, B. Guerzoni, M. Guilbaud, K. Gulbrandsen, T. Gunji, A. Gupta, R. Gupta, H. Gutbrod, Ø. Haaland, C. Hadjidakis, M. Haiduc, H. Hamagaki, G. Hamar, B. H. Han, L. D. Hanratty, A. Hansen, Z. Harmanova, J. W. Harris, M. Hartig, D. Hasegan, D. Hatzifotiadou, A. Hayrapetyan, M. Heide, H. Helstrup, A. Herghelegiu, G. Herrera Corral, N. Herrmann, K. F. Hetland, B. Hicks, P. T. Hille, B. Hippolyte, T. Horaguchi, Y. Hori, P. Hristov, I. Hřivnáčová, M. Huang, S. Huber, T. J. Humanic, D. S. Hwang, R. Ichou, R. Ilkaev, I. Ilkiv, M. Inaba, E. Incani, G. M. Innocenti, P. G. Innocenti, M. Ippolitov, M. Irfan, C. Ivan, M. Ivanov, A. Ivanov, V. Ivanov, O. Ivanytskyi, A. Jachołkowski, P. M. Jacobs, L. Jancurová, H. J. Jang, S. Jangal, R. Janik, M. A. Janik, P. H. S. Y. Jayarathna, S. Jena, R. T. Jimenez Bustamante, L. Jirden, P. G. Jones, W. Jung, H. Jung, A. Jusko, A. B. Kaidalov, V. Kakoyan, S. Kalcher, P. Kaliňák, M. Kalisky, T. Kalliokoski, A. Kalweit, K. Kanaki, J. H. Kang, V. Kaplin, A. Karasu Uysal, O. Karavichev, T. Karavicheva, E. Karpechev, A. Kazantsev, U. Kebschull, R. Keidel, M. M. Khan, P. Khan, S. A. Khan, A. Khanzadeev, Y. Kharlov, B. Kileng, D. W. Kim, M. Kim, J. H. Kim, S. H. Kim, S. Kim, B. Kim, T. Kim, D. J. Kim, J. S. Kim, S. Kirsch, I. Kisel, S. Kiselev, A. Kisiel, J. L. Klay, J. Klein, C. Klein-Bösing, M. Kliemant, A. Kluge, M. L. Knichel, K. Koch, M. K. Köhler, A. Kolojvari, V. Kondratiev, N. Kondratyeva, A. Konevskikh, A. Korneev, C. Kottachchi Kankanamge Don, R. Kour, M. Kowalski, S. Kox, G. Koyithatta Meethaleveedu, J. Kral, I. Králik, F. Kramer, I. Kraus, T. Krawutschke, M. Kretz, M. Krivda, F. Krizek, M. Krus, E. Kryshen, M. Krzewicki, Y. Kucheriaev, C. Kuhn, P. G. Kuijer, P. Kurashvili, A. B. Kurepin, A. Kurepin, A. Kuryakin, V. Kushpil, S. Kushpil, H. Kvaerno, M. J. Kweon, Y. Kwon, P. Ladrón de Guevara, I. Lakomov, R. Langoy, C. Lara, A. Lardeux, P. La Rocca, C. Lazzeroni, R. Lea, Y. Le Bornec, K. S. Lee, S. C. Lee, F. Lefèvre, J. Lehnert, L. Leistam, M. Lenhardt, V. Lenti, H. León, I. León Monzón, H. León Vargas, P. Lévai, X. Li, J. Lien, R. Lietava, S. Lindal, V. Lindenstruth, C. Lippmann, M. A. Lisa, L. Liu, P. I. Loenne, V. R. Loggins, V. Loginov, S. Lohn, D. Lohner, C. Loizides, K. K. Loo, X. Lopez, E. López Torres, G. Løvhøiden, X. -G. Lu, P. Luettig, M. Lunardon, J. Luo, G. Luparello, L. Luquin, C. Luzzi, R. Ma, K. Ma, D. M. Madagodahettige-Don, A. Maevskaya, M. Mager, D. P. Mahapatra, A. Maire, M. Malaev, I. Maldonado Cervantes, L. Malinina, D. Mal'Kevich, P. Malzacher, A. Mamonov, L. Manceau, L. Mangotra, V. Manko, F. Manso, V. Manzari, Y. Mao, M. Marchisone, J. Mareš, G. V. Margagliotti, A. Margotti, A. Marín, C. Markert, I. Martashvili, P. Martinengo, M. I. Martínez, A. Martínez Davalos, G. Martínez García, Y. Martynov, A. Mas, S. Masciocchi, M. Masera, A. Masoni, L. Massacrier, M. Mastromarco, A. Mastroserio, Z. L. Matthews, A. Matyja, D. Mayani, C. Mayer, J. Mazer, M. A. Mazzoni, F. Meddi, A. Menchaca-Rocha, J. Mercado Pérez, M. Meres, Y. Miake, A. Michalon, J. Midori, L. Milano, J. Milosevic, A. Mischke, A. N. Mishra, D. Miśkowiec, C. Mitu, J. Mlynarz, A. K. Mohanty, B. Mohanty, L. Molnar, L. Montaño Zetina, M. Monteno, E. Montes, T. Moon, M. Morando, D. A. Moreira De Godoy, S. Moretto, A. Morsch, V. Muccifora, E. Mudnic, S. Muhuri, H. Müller, M. G. Munhoz, L. Musa, A. Musso, B. K. Nandi, R. Nania, E. Nappi, C. Nattrass, N. P. Naumov, S. Navin, T. K. Nayak, S. Nazarenko, G. Nazarov, A. Nedosekin, M. Nicassio, B. S. Nielsen, T. Niida, S. Nikolaev, V. Nikolic, S. Nikulin, V. Nikulin, B. S. Nilsen, M. S. Nilsson, F. 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Pop, S. Porteboeuf-Houssais, V. Pospíšil, B. Potukuchi, S. K. Prasad, R. Preghenella, F. Prino, C. A. Pruneau, I. Pshenichnov, S. Puchagin, G. Puddu, A. Pulvirenti, V. Punin, M. Putiš, J. Putschke, E. Quercigh, H. Qvigstad, A. Rachevski, A. Rademakers, S. Radomski, T. S. Räihä, J. Rak, A. Rakotozafindrabe, L. Ramello, A. Ramírez Reyes, R. Raniwala, S. Raniwala, S. S. Räsänen, B. T. Rascanu, D. Rathee, K. F. Read, J. S. Real, K. Redlich, P. Reichelt, M. Reicher, R. Renfordt, A. R. Reolon, A. Reshetin, F. Rettig, J. -P. Revol, K. Reygers, L. Riccati, R. A. Ricci, M. Richter, P. Riedler, W. Riegler, F. Riggi, M. Rodríguez Cahuantzi, D. Rohr, D. Röhrich, R. Romita, F. Ronchetti, P. Rosnet, S. Rossegger, A. Rossi, F. Roukoutakis, C. Roy, P. Roy, A. J. Rubio Montero, R. Rui, E. Ryabinkin, A. Rybicki, S. Sadovsky, K. Šafařík, P. K. Sahu, J. Saini, H. Sakaguchi, S. Sakai, D. Sakata, C. A. Salgado, S. Sambyal, V. Samsonov, X. Sanchez Castro, L. Šándor, A. Sandoval, M. Sano, S. Sano, R. 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Volpe, B. von Haller, D. Vranic, G. Øvrebekk, J. Vrláková, B. Vulpescu, A. Vyushin, V. Wagner, B. Wagner, R. Wan, Y. Wang, M. Wang, Y. Wang, D. Wang, K. Watanabe, J. P. Wessels, U. Westerhoff, J. Wiechula, J. Wikne, M. Wilde, A. Wilk, G. Wilk, M. C. S. Williams, B. Windelband, L. Xaplanteris Karampatsos, S. Yang, H. Yang, S. Yano, S. Yasnopolskiy, J. Yi, Z. Yin, H. Yokoyama, I. -K. Yoo, J. Yoon, W. Yu, X. Yuan, I. Yushmanov, C. Zach, C. Zampolli, S. Zaporozhets, A. Zarochentsev, P. Závada, N. Zaviyalov, H. Zbroszczyk, P. Zelnicek, I. Zgura, M. Zhalov, X. Zhang, D. Zhou, Y. Zhou, F. Zhou, X. Zhu, A. Zichichi, A. Zimmermann, G. Zinovjev, Y. Zoccarato, M. Zynovyev

The ALICE experiment has measured low-mass dimuon production in pp collisions at \sqrt{s} = 7 TeV in the dimuon rapidity region 2.5Read More

2011Nov
Authors: The ALICE Collaboration, B. Abelev, A. Abrahantes Quintana, D. Adamova, A. M. Adare, M. M. Aggarwal, G. Aglieri Rinella, A. G. Agocs, A. Agostinelli, S. Aguilar Salazar, Z. Ahammed, N. Ahmad, A. Ahmad Masoodi, S. U. Ahn, A. Akindinov, D. Aleksandrov, B. Alessandro, R. Alfaro Molina, A. Alici, A. Alkin, E. AlmarazAvina, T. Alt, V. Altini, S. Altinpinar, I. Altsybeev, C. Andrei, A. Andronic, V. Anguelov, C. Anson, T. Anticic, F. Antinori, P. Antonioli, L. Aphecetche, H. Appelshauser, N. Arbor, S. Arcelli, A. Arend, N. Armesto, R. Arnaldi, T. Aronsson, I. C. Arsene, M. Arslandok, A. Asryan, A. Augustinus, R. Averbeck, T. C. Awes, J. Aysto, M. D. Azmi, M. Bach, A. Badala, Y. W. Baek, R. Bailhache, R. Bala, R. Baldini Ferroli, A. Baldisseri, A. Baldit, F. Baltasar Dos Santos Pedrosa, J. Ban, R. C. Baral, R. Barbera, F. Barile, G. G. Barnafoldi, L. S. Barnby, V. Barret, J. Bartke, M. Basile, N. Bastid, B. Bathen, G. Batigne, B. Batyunya, C. Baumann, I. G. Bearden, H. Beck, I. Belikov, F. Bellini, R. Bellwied, E. Belmont-Moreno, S. Beole, I. Berceanu, A. Bercuci, Y. Berdnikov, D. Berenyi, C. Bergmann, L. Betev, A. Bhasin, A. K. Bhati, N. Bianchi, L. Bianchi, C. Bianchin, J. Bielcik, J. Bielcikova, A. Bilandzic, F. Blanco, F. Blanco, D. Blau, C. Blume, M. Boccioli, N. Bock, A. Bogdanov, H. Boggild, M. Bogolyubsky, L. Boldizsar, M. Bombara, J. Book, H. Borel, A. Borissov, C. Bortolin, S. Bose, F. Bossu, M. Botje, S. Bottger, B. Boyer, P. Braun-Munzinger, M. Bregant, T. Breitner, M. Broz, R. Brun, E. Bruna, G. E. Bruno, D. Budnikov, H. Buesching, S. Bufalino, K. Bugaiev, O. Busch, Z. Buthelezi, D. Caffarri, X. Cai, H. Caines, E. Calvo Villar, P. Camerini, V. Canoa Roman, G. Cara Romeo, W. Carena, F. Carena, N. Carlin Filho, F. Carminati, C. A. Carrillo Montoya, A. Casanova Diaz, M. Caselle, J. Castillo Castellanos, J. F. Castillo Hernandez, E. A. R. Casula, V. Catanescu, C. Cavicchioli, J. Cepila, P. Cerello, B. Chang, S. Chapeland, J. L. Charvet, S. Chattopadhyay, S. Chattopadhyay, M. Cherney, C. Cheshkov, B. Cheynis, E. Chiavassa, V. Chibante Barroso, D. D. Chinellato, P. Chochula, M. Chojnacki, P. Christakoglou, C. H. Christensen, P. Christiansen, T. Chujo, S. U. Chung, C. Cicalo, L. Cifarelli, F. Cindolo, J. Cleymans, F. Coccetti, J. -P. Coffin, F. Colamaria, D. Colella, G. Conesa Balbastre, Z. Conesa del Valle, P. Constantin, G. Contin, J. G. Contreras, T. M. Cormier, Y. Corrales Morales, P. Cortese, I. Cortes Maldonado, M. R. Cosentino, F. Costa, M. E. Cotallo, E. Crescio, P. Crochet, E. Cruz Alaniz, E. Cuautle, L. Cunqueiro, A. Dainese, H. H. Dalsgaard, A. Danu, D. Das, I. Das, K. Das, S. Dash, A. Dash, S. De, A. De Azevedo Moregula, G. O. V. de Barros, A. De Caro, G. de Cataldo, J. de Cuveland, A. De Falco, D. De Gruttola, H. Delagrange, E. Del Castillo Sanchez, A. Deloff, V. Demanov, N. De Marco, E. Denes, S. De Pasquale, A. Deppman, G. D Erasmo, R. de Rooij, D. Di Bari, T. Dietel, C. Di Giglio, S. Di Liberto, A. Di Mauro, P. Di Nezza, R. Divia, O. Djuvsland, A. Dobrin, T. Dobrowolski, I. Dominguez, B. Donigus, O. Dordic, O. Driga, A. K. Dubey, L. Ducroux, P. Dupieux, M. R. Dutta Majumdar, A. K. Dutta Majumdar, D. Elia, D. Emschermann, H. Engel, H. A. Erdal, B. Espagnon, M. Estienne, S. Esumi, D. Evans, G. Eyyubova, D. Fabris, J. Faivre, D. Falchieri, A. Fantoni, M. Fasel, R. Fearick, A. Fedunov, D. Fehlker, L. Feldkamp, D. Felea, G. Feofilov, A. Fernandez Tellez, A. Ferretti, R. Ferretti, J. Figiel, M. A. S. Figueredo, S. Filchagin, R. Fini, D. Finogeev, F. M. Fionda, E. M. Fiore, M. Floris, S. Foertsch, P. Foka, S. Fokin, E. Fragiacomo, M. Fragkiadakis, U. Frankenfeld, U. Fuchs, C. Furget, M. Fusco Girard, J. J. Gaardhoje, M. Gagliardi, A. Gago, M. Gallio, D. R. Gangadharan, P. Ganoti, C. Garabatos, E. Garcia-Solis, I. Garishvili, J. Gerhard, M. Germain, C. Geuna, A. Gheata, M. Gheata, B. Ghidini, P. Ghosh, P. Gianotti, M. R. Girard, P. Giubellino, E. Gladysz-Dziadus, P. Glassel, R. Gomez, E. G. Ferreiro, L. H. Gonzalez-Trueba, P. Gonzalez-Zamora, S. Gorbunov, A. Goswami, S. Gotovac, V. Grabski, L. K. Graczykowski, R. Grajcarek, A. Grelli, A. Grigoras, C. Grigoras, V. Grigoriev, S. Grigoryan, A. Grigoryan, B. Grinyov, N. Grion, P. Gros, J. F. Grosse-Oetringhaus, J. -Y. Grossiord, R. Grosso, F. Guber, R. Guernane, C. Guerra Gutierrez, B. Guerzoni, M. Guilbaud, K. Gulbrandsen, T. Gunji, A. Gupta, R. Gupta, H. Gutbrod, O. Haaland, C. Hadjidakis, M. Haiduc, H. Hamagaki, G. Hamar, B. H. Han, L. D. Hanratty, A. Hansen, Z. Harmanova, J. W. Harris, M. Hartig, D. Hasegan, D. Hatzifotiadou, A. Hayrapetyan, M. Heide, H. Helstrup, A. Herghelegiu, G. Herrera Corral, N. Herrmann, K. F. Hetland, B. Hicks, P. T. Hille, B. Hippolyte, T. Horaguchi, Y. Hori, P. Hristov, I. Hrivnacova, M. Huang, S. Huber, T. J. Humanic, D. S. Hwang, R. Ichou, R. Ilkaev, I. Ilkiv, M. Inaba, E. Incani, P. G. Innocenti, G. M. Innocenti, M. Ippolitov, M. Irfan, C. Ivan, A. Ivanov, M. Ivanov, V. Ivanov, O. Ivanytskyi, A. Jacholkowski, P. M. Jacobs, L. Jancurova, S. Jangal, M. A. Janik, R. Janik, P. H. S. Y. Jayarathna, S. Jena, R. T. Jimenez Bustamante, L. Jirden, P. G. Jones, H. Jung, W. Jung, A. Jusko, A. B. Kaidalov, V. Kakoyan, S. Kalcher, P. Kalinak, M. Kalisky, T. Kalliokoski, A. Kalweit, K. Kanaki, J. H. Kang, V. Kaplin, A. Karasu Uysal, O. Karavichev, T. Karavicheva, E. Karpechev, A. Kazantsev, U. Kebschull, R. Keidel, M. M. Khan, S. A. Khan, P. Khan, A. Khanzadeev, Y. Kharlov, B. Kileng, S. Kim, D. W. Kim, J. H. Kim, J. S. Kim, M. Kim, S. H. Kim, T. Kim, B. Kim, D. J. Kim, S. Kirsch, I. Kisel, S. Kiselev, A. Kisiel, J. L. Klay, J. Klein, C. Klein-Bosing, M. Kliemant, A. Kluge, M. L. Knichel, K. Koch, M. K. Kohler, A. Kolojvari, V. Kondratiev, N. Kondratyeva, A. Konevskikh, C. Kottachchi Kankanamge Don, R. Kour, M. Kowalski, S. Kox, G. Koyithatta Meethaleveedu, J. Kral, I. Kralik, F. Kramer, I. Kraus, T. Krawutschke, M. Kretz, M. Krivda, F. Krizek, M. Krus, E. Kryshen, M. Krzewicki, Y. Kucheriaev, C. Kuhn, P. G. Kuijer, P. Kurashvili, A. B. Kurepin, A. Kurepin, A. Kuryakin, V. Kushpil, S. Kushpil, H. Kvaerno, M. J. Kweon, Y. Kwon, P. Ladron de Guevara, I. Lakomov, R. Langoy, C. Lara, A. Lardeux, P. La Rocca, D. T. Larsen, C. Lazzeroni, R. Lea, Y. Le Bornec, S. C. Lee, K. S. Lee, F. Lefevre, J. Lehnert, L. Leistam, M. Lenhardt, V. Lenti, H. Leon, I. Leon Monzon, H. Leon Vargas, P. Levai, X. Li\, J. Lien, R. Lietava, S. Lindal, V. Lindenstruth, C. Lippmann, M. A. Lisa, L. Liu, P. I. Loenne, V. R. Loggins, V. Loginov, S. Lohn, D. Lohner, C. Loizides, K. K. Loo, X. Lopez, E. Lopez Torres, G. Lovhoiden, X. -G. Lu, P. Luettig, M. Lunardon, J. Luo, G. Luparello, L. Luquin, C. Luzzi, R. Ma, K. Ma, D. M. Madagodahettige-Don, A. Maevskaya, M. Mager, D. P. Mahapatra, A. Maire, M. Malaev, I. Maldonado Cervantes, L. Malinina., V. Lomonosov, D. Mal'Kevich, P. Malzacher, A. Mamonov, L. Manceau, L. Mangotra, V. Manko, F. Manso, V. Manzari, Y. Mao, M. Marchisone, J. Mares, G. V. Margagliotti, A. Margotti, A. Marin, C. Markert, I. Martashvili, P. Martinengo, M. I. Martinez, A. Martinez Davalos, G. Martinez Garcia, Y. Martynov, A. Mas, S. Masciocchi, M. Masera, A. Masoni, L. Massacrier, M. Mastromarco, A. Mastroserio, Z. L. Matthews, A. Matyja, D. Mayani, C. Mayer, M. A. Mazzoni, F. Meddi, A. Menchaca-Rocha, J. Mercado Perez, M. Meres, Y. Miake, A. Michalon, J. Midori, L. Milano, J. Milosevic, A. Mischke, A. N. Mishra, D. Miskowiec, C. Mitu, J. Mlynarz, A. K. Mohanty, B. Mohanty, L. Molnar, L. Montano Zetina, M. Monteno, E. Montes, T. Moon, M. Morando, D. A. Moreira De Godoy, S. Moretto, A. Morsch, V. Muccifora, E. Mudnic, S. Muhuri, H. Muller, M. G. Munhoz, L. Musa, A. Musso, B. K. Nandi, R. Nania, E. Nappi, C. Nattrass, N. P. Naumov, S. Navin, T. K. Nayak, S. Nazarenko, G. Nazarov, A. Nedosekin, M. Nicassio, B. S. Nielsen, T. Niida, S. Nikolaev, V. Nikolic, V. Nikulin, S. Nikulin, B. S. Nilsen, M. S. Nilsson, F. Noferini, P. 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Vulpescu, A. Vyushin, V. Wagner, B. Wagner, R. Wan, Y. Wang, D. Wang, Y. Wang, M. Wang, K. Watanabe, J. P. Wessels, U. Westerhoff, J. Wiechula, J. Wikne, M. Wilde, G. Wilk, A. Wilk, M. C. S. Williams, B. Windelband, L. Xaplanteris Karampatsos, H. Yang, S. Yano, S. Yasnopolskiy, J. Yi, Z. Yin, H. Yokoyama, I. -K. Yoo, J. Yoon, W. Yu, X. Yuan, I. Yushmanov, C. Zach, C. Zampolli, S. Zaporozhets, A. Zarochentsev, P. Zavada, N. Zaviyalov, H. Zbroszczyk, P. Zelnicek, I. Zgura, M. Zhalov, X. Zhang, F. Zhou, D. Zhou, Y. Zhou, X. Zhu, A. Zichichi, A. Zimmermann, G. Zinovjev, Y. Zoccarato, M. Zynovyev

The pt-differential inclusive production cross sections of the prompt charmed mesons D0, D+, and D*+ in the rapidity range |y|<0.5 were measured in proton-proton collisions at sqrt(s) = 7 TeV at the LHC using the ALICE detector. Reconstructing the decays D0->K-pi+, D+->K-pi+pi+, D*+->D0pi+, and their charge conjugates, about 8,400 D0, 2,900 D+, and 2,600 D*+ mesons with 1Read More

2011Nov
Authors: The ALICE Collaboration, B. Abelev, A. Abrahantes Quintana, D. Adamova, A. M. Adare, M. M. Aggarwal, G. Aglieri Rinella, A. G. Agocs, A. Agostinelli, S. Aguilar Salazar, Z. Ahammed, N. Ahmad, A. Ahmad Masoodi, S. U. Ahn, A. Akindinov, D. Aleksandrov, B. Alessandro, R. Alfaro Molina, A. Alici, A. Alkin, E. AlmarazAvina, T. Alt, V. Altini, S. Altinpinar, I. Altsybeev, C. Andrei, A. Andronic, V. Anguelov, C. Anson, T. Anticic, F. Antinori, P. Antonioli, L. Aphecetche, H. Appelshauser, N. Arbor, S. Arcelli, A. Arend, N. Armesto, R. Arnaldi, T. Aronsson, I. C. Arsene, M. Arslandok, A. Asryan, A. Augustinus, R. Averbeck, T. C. Awes, J. Aysto, M. D. Azmi, M. Bach, A. Badala, Y. W. Baek, R. Bailhache, R. Bala, R. Baldini Ferroli, A. Baldisseri, A. Baldit, F. Baltasar Dos Santos Pedrosa, J. Ban, R. C. Baral, R. Barbera, F. Barile, G. G. Barnafoldi, L. S. Barnby, V. Barret, J. Bartke, M. Basile, N. Bastid, B. Bathen, G. Batigne, B. Batyunya, C. Baumann, I. G. Bearden, H. Beck, I. Belikov, F. Bellini, R. Bellwied, E. Belmont-Moreno, S. Beole, I. Berceanu, A. Bercuci, Y. Berdnikov, D. Berenyi, C. Bergmann, L. Betev, A. Bhasin, A. K. Bhati, N. Bianchi, L. Bianchi, C. Bianchin, J. Bielcik, J. Bielcikova, A. Bilandzic, F. Blanco, F. Blanco, D. Blau, C. Blume, M. Boccioli, N. Bock, A. Bogdanov, H. Boggild, M. Bogolyubsky, L. Boldizsar, M. Bombara, J. Book, H. Borel, A. Borissov, C. Bortolin, S. Bose, F. Bossu, M. Botje, S. Bottger, B. Boyer, P. Braun-Munzinger, M. Bregant, T. Breitner, M. Broz, R. Brun, E. Bruna, G. E. Bruno, D. Budnikov, H. Buesching, S. Bufalino, K. Bugaiev, O. Busch, Z. Buthelezi, D. Caffarri, X. Cai, H. Caines, E. Calvo Villar, P. Camerini, V. Canoa Roman, G. Cara Romeo, W. Carena, F. Carena, N. Carlin Filho, F. Carminati, C. A. Carrillo Montoya, A. Casanova Diaz, M. Caselle, J. Castillo Castellanos, J. F. Castillo Hernandez, E. A. R. Casula, V. Catanescu, C. Cavicchioli, J. Cepila, P. Cerello, B. Chang, S. Chapeland, J. L. Charvet, S. Chattopadhyay, S. Chattopadhyay, M. Cherney, C. Cheshkov, B. Cheynis, E. Chiavassa, V. Chibante Barroso, D. D. Chinellato, P. Chochula, M. Chojnacki, P. Christakoglou, C. H. Christensen, P. Christiansen, T. Chujo, S. U. Chung, C. Cicalo, L. Cifarelli, F. Cindolo, J. Cleymans, F. Coccetti, J. -P. Coffin, F. Colamaria, D. Colella, G. Conesa Balbastre, Z. Conesa del Valle, P. Constantin, G. Contin, J. G. Contreras, T. M. Cormier, Y. Corrales Morales, P. Cortese, I. Cortes Maldonado, M. R. Cosentino, F. Costa, M. E. Cotallo, E. Crescio, P. Crochet, E. Cruz Alaniz, E. Cuautle, L. Cunqueiro, A. Dainese, H. H. Dalsgaard, A. Danu, D. Das, I. Das, K. Das, S. Dash, A. Dash, S. De, A. De Azevedo Moregula, G. O. V. de Barros, A. De Caro, G. de Cataldo, J. de Cuveland, A. De Falco, D. De Gruttola, H. Delagrange, E. Del Castillo Sanchez, A. Deloff, V. Demanov, N. De Marco, E. Denes, S. De Pasquale, A. Deppman, G. D Erasmo, R. de Rooij, D. Di Bari, T. Dietel, C. Di Giglio, S. Di Liberto, A. Di Mauro, P. Di Nezza, R. Divia, O. Djuvsland, A. Dobrin, T. Dobrowolski, I. Dominguez, B. Donigus, O. Dordic, O. Driga, A. K. Dubey, L. Ducroux, P. Dupieux, M. R. Dutta Majumdar, A. K. Dutta Majumdar, D. Elia, D. Emschermann, H. Engel, H. A. Erdal, B. Espagnon, M. Estienne, S. Esumi, D. Evans, G. Eyyubova, D. Fabris, J. Faivre, D. Falchieri, A. Fantoni, M. Fasel, R. Fearick, A. Fedunov, D. Fehlker, L. Feldkamp, D. Felea, G. Feofilov, A. Fernandez Tellez, E. G. Ferreiro, A. Ferretti, R. Ferretti, J. Figiel, M. A. S. Figueredo, S. Filchagin, R. Fini, D. Finogeev, F. M. Fionda, E. M. Fiore, M. Floris, S. Foertsch, P. Foka, S. Fokin, E. Fragiacomo, M. Fragkiadakis, U. Frankenfeld, U. Fuchs, C. Furget, M. Fusco Girard, J. J. Gaardhoje, M. Gagliardi, A. Gago, M. Gallio, D. R. Gangadharan, P. Ganoti, C. Garabatos, E. Garcia-Solis, I. Garishvili, J. Gerhard, M. Germain, C. Geuna, A. Gheata, M. Gheata, B. Ghidini, P. Ghosh, P. Gianotti, M. R. Girard, P. Giubellino, E. Gladysz-Dziadus, P. Glassel, R. Gomez, L. H. Gonzalez-Trueba, P. Gonzalez-Zamora, S. Gorbunov, A. Goswami, S. Gotovac, V. Grabski, L. K. Graczykowski, R. Grajcarek, A. Grelli, A. Grigoras, C. Grigoras, V. Grigoriev, S. Grigoryan, A. Grigoryan, B. Grinyov, N. Grion, P. Gros, J. F. Grosse-Oetringhaus, J. -Y. Grossiord, R. Grosso, F. Guber, R. Guernane, C. Guerra Gutierrez, B. Guerzoni, M. Guilbaud, K. Gulbrandsen, T. Gunji, A. Gupta, R. Gupta, H. Gutbrod, O. Haaland, C. Hadjidakis, M. Haiduc, H. Hamagaki, G. Hamar, B. H. Han, L. D. Hanratty, A. Hansen, Z. Harmanova, J. W. Harris, M. Hartig, D. Hasegan, D. Hatzifotiadou, A. Hayrapetyan, M. Heide, H. Helstrup, A. Herghelegiu, G. Herrera Corral, N. Herrmann, K. F. Hetland, B. Hicks, P. T. Hille, B. Hippolyte, T. Horaguchi, Y. Hori, P. Hristov, I. Hrivnacova, M. Huang, S. Huber, T. J. Humanic, D. S. Hwang, R. Ichou, R. Ilkaev, I. Ilkiv, M. Inaba, E. Incani, P. G. Innocenti, G. M. Innocenti, M. Ippolitov, M. Irfan, C. Ivan, A. Ivanov, M. Ivanov, V. Ivanov, O. Ivanytskyi, A. Jacholkowski, P. M. Jacobs, L. Jancurova, S. Jangal, M. A. Janik, R. Janik, P. H. S. Y. Jayarathna, S. Jena, R. T. Jimenez Bustamante, L. Jirden, P. G. Jones, H. Jung, W. Jung, A. Jusko, A. B. Kaidalov, V. Kakoyan, S. Kalcher, P. Kalinak, M. Kalisky, T. Kalliokoski, A. Kalweit, K. Kanaki, J. H. Kang, V. Kaplin, A. Karasu Uysal, O. Karavichev, T. Karavicheva, E. Karpechev, A. Kazantsev, U. Kebschull, R. Keidel, M. M. Khan, S. A. Khan, P. Khan, A. Khanzadeev, Y. Kharlov, B. Kileng, S. Kim, D. W. Kim, J. H. Kim, J. S. Kim, M. Kim, S. H. Kim, T. Kim, B. Kim, D. J. Kim, S. Kirsch, I. Kisel, S. Kiselev, A. Kisiel, J. L. Klay, J. Klein, C. Klein-Bosing, M. Kliemant, A. Kluge, M. L. Knichel, K. Koch, M. K. Kohler, A. Kolojvari, V. Kondratiev, N. Kondratyeva, A. Konevskikh, C. Kottachchi Kankanamge Don, R. Kour, M. Kowalski, S. Kox, G. Koyithatta Meethaleveedu, J. Kral, I. Kralik, F. Kramer, I. Kraus, T. Krawutschke, M. Kretz, M. Krivda, F. Krizek, M. Krus, E. Kryshen, M. Krzewicki, Y. Kucheriaev, C. Kuhn, P. G. Kuijer, P. Kurashvili, A. B. Kurepin, A. Kurepin, A. Kuryakin, V. Kushpil, S. Kushpil, H. Kvaerno, M. J. Kweon, Y. Kwon, P. Ladron de Guevara, I. Lakomov, R. Langoy, C. Lara, A. Lardeux, P. La Rocca, D. T. Larsen, C. Lazzeroni, R. Lea, Y. Le Bornec, S. C. Lee, K. S. Lee, F. Lefevre, J. Lehnert, L. Leistam, M. Lenhardt, V. Lenti, H. Leon, I. Leon Monzon, H. Leon Vargas, P. Levai, X. Li\, J. Lien, R. Lietava, S. Lindal, V. Lindenstruth, C. Lippmann, M. A. Lisa, L. Liu, P. I. Loenne, V. R. Loggins, V. Loginov, S. Lohn, D. Lohner, C. Loizides, K. K. Loo, X. Lopez, E. Lopez Torres, G. Lovhoiden, X. -G. Lu, P. Luettig, M. Lunardon, J. Luo, G. Luparello, L. Luquin, C. Luzzi, R. Ma, K. Ma, D. M. Madagodahettige-Don, A. Maevskaya, M. Mager, D. P. Mahapatra, A. Maire, M. Malaev, I. Maldonado Cervantes, L. Malinina., V. Lomonosov, D. Mal'Kevich, P. Malzacher, A. Mamonov, L. Manceau, L. Mangotra, V. Manko, F. Manso, V. Manzari, Y. Mao, M. Marchisone, J. Mares, G. V. Margagliotti, A. Margotti, A. Marin, C. Markert, I. Martashvili, P. Martinengo, M. I. Martinez, A. Martinez Davalos, G. Martinez Garcia, Y. Martynov, A. Mas, S. Masciocchi, M. Masera, A. Masoni, L. Massacrier, M. Mastromarco, A. Mastroserio, Z. L. Matthews, A. Matyja, D. Mayani, C. Mayer, M. A. Mazzoni, F. Meddi, A. Menchaca-Rocha, J. Mercado Perez, M. Meres, Y. Miake, A. Michalon, J. Midori, L. Milano, J. Milosevic, A. Mischke, A. N. Mishra, D. Miskowiec, C. Mitu, J. Mlynarz, A. K. Mohanty, B. Mohanty, L. Molnar, L. Montano Zetina, M. Monteno, E. Montes, T. Moon, M. Morando, D. A. Moreira De Godoy, S. Moretto, A. Morsch, V. Muccifora, E. Mudnic, S. Muhuri, H. Muller, M. G. Munhoz, L. Musa, A. Musso, B. K. Nandi, R. Nania, E. Nappi, C. Nattrass, N. P. Naumov, S. Navin, T. K. Nayak, S. Nazarenko, G. Nazarov, A. Nedosekin, M. Nicassio, B. S. Nielsen, T. Niida, S. Nikolaev, V. Nikolic, V. Nikulin, S. Nikulin, B. S. Nilsen, M. S. Nilsson, F. Noferini, P. Nomokonov, G. 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Vyushin, V. Wagner, B. Wagner, R. Wan, Y. Wang, D. Wang, Y. Wang, M. Wang, K. Watanabe, J. P. Wessels, U. Westerhoff, J. Wiechula, J. Wikne, M. Wilde, G. Wilk, A. Wilk, M. C. S. Williams, B. Windelband, L. Xaplanteris Karampatsos, H. Yang, S. Yano, S. Yasnopolskiy, J. Yi, Z. Yin, H. Yokoyama, I. -K. Yoo, J. Yoon, W. Yu, X. Yuan, I. Yushmanov, C. Zach, C. Zampolli, S. Zaporozhets, A. Zarochentsev, P. Zavada, N. Zaviyalov, H. Zbroszczyk, P. Zelnicek, I. Zgura, M. Zhalov, X. Zhang, F. Zhou, D. Zhou, Y. Zhou, X. Zhu, A. Zichichi, A. Zimmermann, G. Zinovjev, Y. Zoccarato, M. Zynovyev

The ALICE Collaboration has studied J/psi production in pp collisions at sqrt(s)=7 TeV at the LHC through its muon pair decay. The polar and azimuthal angle distributions of the decay muons were measured, and results on the J/psi polarization parameters lambda_theta and lambda_phi were obtained. The study was performed in the kinematic region 2. Read More

Studies of medium-induced QCD radiation usually rely on the calculation of single-gluon radiation spectrum off an energetic parton traversing an extended colored medium. Recently, the importance of interference effects between emitters in the medium has been explored. In this work we extend previous studies by calculating the single-gluon coherent spectrum off an antenna consisting of a massive quark-antiquark pair. Read More

In this contribution, the one-gluon radiation spectrum off a massive quark-antiquark ($q {\bar q}$) antenna traversing a QCD medium is calculated in the eikonal approximation. The interference between emissions from the quark and the antiquark is considered. The gluon spectrum computed at first order in the opacity expansion is collinear finite but infrared divergent, which is in contrast with the result obtained from an independent emitter which is both infrared and collinear finite. Read More

We present a global analysis of available data on inclusive structure functions measured in electron-proton scattering at small values of Bjorken-x, including the latest data from the combined HERA analysis on reduced cross sections. Our approach relies on the dipole formulation of DIS together with the use of the non-linear running coupling BK equation for the description of the small-x dynamics. With the resulting parametrization we are able to describe the latest FL data measured by the H1 collaboration. Read More

The medium-induced one-gluon radiation spectrum off a massive quark-antiquark ($q {\bar q}$) antenna traversing a colored QCD medium is calculated in this contribution. The gluon spectrum off the antenna computed at first order in the opacity expansion is collinear finite but infrared divergent, which is different from the result obtained from an independent emitter which is both infrared and collinear finite. The interference between emitters dominates the soft gluon radiation when the antenna opening angle is small and the emitted gluon is soft, whereas the antenna behaves like a superposition of independent emitters when the opening angle is large and the radiated gluon is hard. Read More