F. Nozzoli - Univ. Roma Tor Vergata

F. Nozzoli
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Name
F. Nozzoli
Affiliation
Univ. Roma Tor Vergata
City
Rome
Country
Italy

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Pub Categories

 
Astrophysics (16)
 
High Energy Physics - Experiment (7)
 
High Energy Physics - Phenomenology (6)
 
Physics - Instrumentation and Detectors (4)
 
Cosmology and Nongalactic Astrophysics (3)
 
Instrumentation and Methods for Astrophysics (3)
 
High Energy Astrophysical Phenomena (2)
 
Astrophysics of Galaxies (2)
 
Nuclear Experiment (2)
 
Physics - Space Physics (1)
 
General Relativity and Quantum Cosmology (1)

Publications Authored By F. Nozzoli

The Extreme Energy Events Project is a synchronous sparse array of 52 tracking detectors for studying High Energy Cosmic Rays (HECR) and Cosmic Rays-related phenomena. The observatory is also meant to address Long Distance Correlation (LDC) phenomena: the network is deployed over a broad area covering 10 degrees in latitude and 11 in longitude. An overview of a set of preliminary results is given, extending from the study of local muon flux dependance on solar activity to the investigation of the upward-going component of muon flux traversing the EEE stations; from the search for anisotropies at the sub-TeV scale to the hints for observations of km-scale Extensive Air Shower (EAS). Read More

A precision measurement by AMS of the antiproton-to-proton flux ratio in primary cosmic rays in the absolute rigidity range from 1 to 450 GV is presented based on $3.49\times10^5$ antiproton events and $2.42\times10^9$ proton events. Read More

Massive particles with self interactions of the order of 0.2 barn/GeV are intriguing Dark Matter candidates from an astrophysical point of view. Current and past experiments for direct detection of massive Dark Matter particles are focusing to relatively low cross sections with ordinary matter, however they cannot rule out very large cross sections, $\sigma/M > 0. Read More

DAMA annual modulation data and, CoGeNT, CDMS-II, EDELWEISS-II, CRESST excesses of events over the expected background are reanalyzed in terms of a dark matter particle signal considering the case of a rotating halo. It is found that DAMA data favor the configurations of very high mass dark matter particles in a corotating cold flux. A similar high-mass/low-velocity solution would be compatible with the observed events in CoGeNT, CDMS-II, EDELWEISS-II and CRESST experiments and could be of interest in the light of the positron/electron excess measured by Pamela and Fermi in cosmic rays. Read More

2010Sep
Affiliations: 1INFN Roma Tor Vergata, 2INFN Roma Tor Vergata, 3INFN Roma, 4INFN LNGS, 5INR Kiev, 6ISM Kharkiv, 7INFN Roma Tor Vergata, 8Nikolaev IIC, Novosibirsk, 9ISM Kharkiv, 10INFN Roma, 11INR Kiev, 12INFN LNGS, 13ISM Kharkiv, 14INFN Roma Tor Vergata, 15INFN LNGS, 16INR Kiev, 17INR Kiev, 18INFN Roma, 19Nikolaev IIC, Novosibirsk, 20INR Kiev, 21ISM Kharkiv, 22Nikolaev IIC, Novosibirsk, 23ISM Kharkiv

The radioactive contamination of ZnWO4 crystal scintillators has been measured deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN in Italy with a total exposure 3197 kg x h. Monte Carlo simulation, time-amplitude and pulse-shape analyses of the data have been applied to estimate the radioactive contamination of the ZnWO4 samples. One of the ZnWO4 crystals has also been tested by ultra-low background gamma spectrometry. Read More

2010Jul
Affiliations: 1Univ. Roma Tor Vergata and INFN Roma Tor Vergata, 2Univ. Roma Tor Vergata and INFN Roma Tor Vergata, 3Univ. Roma and INFN Roma, 4INFN LNGS, 5IHEP Beijing, 6Univ. Roma and INFN Roma, 7IHEP Beijing, 8Univ. Roma and INFN Roma, 9IHEP Beijing, 10Univ. Roma Tor Vergata and INFN Roma Tor Vergata, 11Univ. Roma Tor Vergata and INFN Roma Tor Vergata, 12Univ. Roma and INFN Roma, 13IHEP Beijing, 14IHEP Beijing, 15IHEP Beijing

The present DAMA/LIBRA experiment and the former DAMA/NaI have cumulatively released so far the results obtained with the data collected over 13 annual cycles (total exposure: 1.17 ton $\times$ yr). They give a model independent evidence of the presence of DM particles in the galactic halo on the basis of the DM annual modulation signature at 8. Read More

2010Feb
Affiliations: 1Univ. Roma Tor Vergata, 2INFN Roma Tor Vergata, 3Univ. Roma, 4INFN LNGS, 5IHEP Beijing, 6Univ. Roma, 7IHEP Beijing, 8INFN Roma, 9IHEP Beijing, 10IHEP Beijing, 11Univ. Roma Tor Vergata, 12Univ. Roma Tor Vergata, 13Univ. Roma, 14IHEP Beijing, 15IHEP Beijing, 16IHEP Beijing

DAMA/LIBRA is running at the Gran Sasso National Laboratory of the I.N.F. Read More

2009Dec
Affiliations: 1Univ. Roma Tor Vergata, 2INFN Roma Tor Vergata, 3Univ. Roma, 4INFN LNGS, 5IHEP Beijing, 6Univ. Roma, 7IHEP Beijing, 8INFN Roma, 9IHEP Beijing, 10IHEP Beijing, 11INFN Roma Tor Vergata, 12Univ. Roma Tor Vergata, 13Univ. Roma, 14IHEP Beijing, 15IHEP Beijing

A variety of detectors has been proposed for dark matter direct detection, but most of them -- by the fact -- are still at R&D stage. In many cases, it is claimed that the lack of an adequate detectors' radio-purity might be compensated through heavy uses of MonteCarlo simulations, subtractions and handlings of the measured counting rates, in order to claim higher sensitivity (just for a particular scenario). The relevance of a correct evaluation of systematic effects in the use of MonteCarlo simulations at very low energy (which has always been safely discouraged in the field so far) and of multiple subtractions and handling procedures applied to the measured counting rate is shortly addressed here at some extent. Read More

2009Dec
Affiliations: 1Univ. Roma Tor Vergata, 2INFN Roma Tor Vergata, 3Univ. Roma, 4INFN LNGS, 5IHEP Beijing, 6Univ. Roma, 7IHEP Beijing, 8INFN Roma, 9IHEP Beijing, 10INFN Roma Tor Vergata, 11Univ. Roma Tor Vergata, 12Univ. Roma, 13IHEP Beijing, 14IHEP Beijing, 15IHEP Beijing

The DAMA/LIBRA set-up (about 250 kg highly radiopure NaI(Tl) sensitive mass) is running at the Gran Sasso National Laboratory of the I.N.F. Read More

Double beta processes in 64-Zn, 70-Zn, 180-W, and 186-W have been searched for with the help of large volume (0.1-0.7 kg) low background ZnWO4 crystal scintillators at the Gran Sasso National Laboratories of the INFN. Read More

2008Apr
Affiliations: 1Univ. Roma Tor Vergata, 2INFN Roma Tor Vergata, 3INFN Roma Tor Vergata, 4Univ. Roma, 5INFN LNGS, 6IHEP Beijing, 7Univ. Roma, 8IHEP Beijing, 9INFN Roma, 10IHEP Beijing, 11IHEP Beijing, 12INFN Roma, 13Univ. Roma Tor Vergata, 14Univ. Roma Tor Vergata, 15Univ. Roma, 16IHEP Beijing, 17IHEP Beijing
Category: Astrophysics

The $\simeq$ 250 kg highly radiopure NaI(Tl) DAMA/LIBRA apparatus, running at the Gran Sasso National Laboratory (LNGS) of the I.N.F. Read More

2008Apr
Affiliations: 1Univ. Roma Tor Vergata, 2INFN Roma Tor Vergata, 3Univ. Roma, 4INFN LNGS, 5IHEP Beijing, 6Univ. Roma, 7IHEP Beijing, 8INFN Roma, 9IHEP Beijing, 10IHEP Beijing, 11Univ. Roma Tor Vergata, 12Univ. Roma Tor Vergata, 13Univ. Roma, 14IHEP Beijing, 15IHEP Beijing
Category: Astrophysics

The highly radiopure $\simeq$ 250 kg NaI(Tl) DAMA/LIBRA set-up is running at the Gran Sasso National Laboratory of the I.N.F. Read More

2008Feb
Affiliations: 1Univ. Roma Tor Vergata, 2INFN Roma Tor Vergata, 3Univ. Roma, 4INFN LNGS, 5IHEP Beijing, 6IHEP Beijing, 7INFN Roma, 8IHEP Beijing, 9IHEP Beijing, 10IHEP Beijing, 11Univ. Roma Tor Vergata, 12Univ. Roma Tor Vergata, 13Univ. Roma, 14IHEP Beijing, 15IHEP Beijing, 16IHEP Beijing, 17IHEP Beijing
Category: Astrophysics

Some extensions of the Standard Model provide Dark Matter candidate particles with sub-GeV mass. These Light Dark Matter particles have been considered for example in Warm Dark Matter scenarios (e.g. Read More

2007Dec
Authors: M. Alvarez, D. D'Armiento, G. Agnetta, A. Alberdi, A. Antonelli, A. Argan, P. Assis, E. A. Baltz, C. Bambi, G. Barbiellini, H. Bartko, M. Basset, D. Bastieri, P. Belli, G. Benford, L. Bergstrom, R. Bernabei, G. Bertone, A. Biland, B. Biondo, F. Bocchino, E. Branchini, M. Brigida, T. Bringmann, P. Brogueira, A. Bulgarelli, J. A. Caballero, G. A. Caliandro, P. Camarri, F. Cappella, P. Caraveo, R. Carbone, M. Carvajal, S. Casanova, A. J. Castro-Tirado, O. Catalano, R. Catena, F. Celi, A. Celotti, R. Cerulli, A. Chen, R. Clay, V. Cocco, J. Conrad, E. Costa, A. Cuoco, G. Cusumano, C. J. Dai, B. Dawson, B. De Lotto, G. De Paris, A. de Ugarte Postigo, E. Del Monte, C. Delgado, A. Di Ciaccio, G. Di Cocco, S. Di Falco, G. Di Persio, B. L. Dingus, A. Dominguez, F. Donato, I. Donnarumma, M. Doro, J. Edsjo, J. M. Espino Navas, M. C. Espirito Santo, Y. Evangelista, C. Evoli, D. Fargion, C. Favuzzi, M. Feroci, M. Fiorini, L. Foggetta, N. Fornengo, T. Froysland, M. Frutti, F. Fuschino, J. L. Gomez, M. Gomez, D. Gaggero, N. Galante, M. I. Gallardo, M. Galli, J. E. Garcia, M. Garczarczyk, F. Gargano, M. Gaug, F. Gianotti, S. Giarrusso, B. Giebels, N. Giglietto, P. Giommi, F. Giordano, A. Giuliani, J. Glicenstein, P. Goncalves, D. Grasso, M. Guerriero, H. L. He, A. Incicchitti, J. Kirk, H. H. Kuang, A. La Barbera, G. La Rosa, C. Labanti, G. Lamanna, I. Lapshov, F. Lazzarotto, S. Liberati, F. Liello, P. Lipari, F. Longo, F. Loparco, M. Lozano, P. G. Lucentini De Sanctis, J. M. Ma, M. C. Maccarone, L. Maccione, V. Malvezzi, A. Mangano, M. Mariotti, M. Marisaldi, I. Martel, A. Masiero, E. Massaro, M. Mastropietro, E. Mattaini, F. Mauri, M. N. Mazziotta, S. Mereghetti, T. Mineo, S. Mizobuchi, A. Moiseev, M. Moles, C. Monte, F. Montecchia, E. Morelli, A. Morselli, I. Moskalenko, F. Nozzoli, J. F. Ormes, M. A. Peres-Torres, L. Pacciani, A. Pellizzoni, F. Perez-Bernal, F. Perotti, P. Picozza, L. Pieri, M. Pietroni, M. Pimenta, A. Pina, C. Pittori, C. Pontoni, G. Porrovecchio, F. Prada, M. Prest, D. Prosperi, R. Protheroe, G. Pucella, J. M. Quesada, J. M. Quintana, J. R. Quintero, S. Raino, M. Rapisarda, M. Rissi, J. Rodriguez, E. Rossi, G. Rowell, A. Rubini, F. Russo, M. Sanchez-Conde, B. Sacco, V. Scapin, M. Schelke, A. Segreto, A. Sellerholm, X. D. Sheng, A. Smith, P. Soffitta, R. Sparvoli, P. Spinelli, V. Stamatescu, L. S. Stark, M. Tavani, G. Thornton, L. G. Titarchuk, B. Tome, A. Traci, M. Trifoglio, A. Trois, P. Vallania, E. Vallazza, S. Vercellone, S. Vernetto, V. Vitale, N. Wild, Z. P. Ye, A. Zambra, F. Zandanel, D. Zanello

This Conference is the fifth of a series of Workshops on High Energy Gamma- ray Experiments, following the Conferences held in Perugia 2003, Bari 2004, Cividale del Friuli 2005, Elba Island 2006. This year the focus was on the use of gamma-ray to study the Dark Matter component of the Universe, the origin and propagation of Cosmic Rays, Extra Large Spatial Dimensions and Tests of Lorentz Invariance. Read More

2007Dec
Affiliations: 1Univ. and INFN Roma Tor Vergata, 2Univ. and INFN Roma Tor Vergata, 3Univ. and INFN Roma Tor Vergata, 4Univ. and INFN Roma Tor Vergata, 5Univ. and INFN Roma, 6Univ. and INFN Roma, 7Univ. and INFN Roma, 8INFN LNGS, 9IHEP Beijing, 10IHEP Beijing, 11IHEP Beijing, 12IHEP Beijing, 13IHEP Beijing, 14IHEP Beijing, 15IHEP Beijing, 16IHEP Beijing, 17IHEP Beijing
Category: Astrophysics

Some extensions of the Standard Model provide Dark Matter candidate particles which can have a dominant coupling with the lepton sector of the ordinary matter. Thus, such Dark Matter candidate particles ($\chi^{0}$) can be directly detected only through their interaction with electrons in the detectors of a suitable experiment, while they are lost by experiments based on the rejection of the electromagnetic component of the experimental counting rate. These candidates can also offer a possible source of the 511 keV photons observed from the galactic bulge. Read More

2007Oct
Affiliations: 1Univ. and INFN Roma Tor Vergata, 2Univ. and INFN Roma Tor Vergata, 3Univ. and INFN Roma Tor Vergata, 4Univ. and INFN Roma Tor Vergata, 5Univ. and INFN Roma, 6Univ. and INFN Roma, 7Univ. and INFN Roma, 8INFN LNGS, 9IHEP Beijing, 10IHEP Beijing, 11IHEP Beijing, 12IHEP Beijing, 13IHEP Beijing, 14IHEP Beijing, 15IHEP Beijing, 16IHEP Beijing, 17IHEP Beijing
Category: Astrophysics

The channeling effect of low energy ions along the crystallographic axes and planes of NaI(Tl) crystals is discussed in the framework of corollary investigations on WIMP Dark Matter candidates. In fact, the modeling of this existing effect implies a more complex evaluation of the luminosity yield for low energy recoiling Na and I ions. In the present paper related phenomenological arguments are developed and possible implications are discussed at some extent. Read More

2007Jun
Affiliations: 1Univ. and INFN Roma Tor Vergata, 2Univ. and INFN Roma Tor Vergata, 3Univ. and INFN Roma Tor Vergata, 4Univ. and INFN Roma Tor Vergata, 5Univ. and INFN Roma, 6Univ. and INFN Roma, 7Univ. and INFN Roma, 8INFN LNGS, 9IHEP Beijing, 10IHEP Beijing, 11IHEP Beijing, 12IHEP Beijing, 13IHEP Beijing, 14IHEP Beijing
Category: Astrophysics

The effect pointed out by A. B. Migdal in the 40's (hereafter named Migdal effect) has so far been usually neglected in the direct searches for WIMP Dark Matter candidates. Read More

2006Apr
Affiliations: 1Univ. and INFN Roma Tor Vergata, 2Univ. and INFN Roma Tor Vergata, 3Univ. and INFN Roma Tor Vergata, 4Univ. and INFN Roma Tor Vergata, 5Univ. and INFN Roma, 6Univ. and INFN Roma, 7Univ. and INFN Roma, 8INFN LNGS, 9IHEP Beijing, 10IHEP Beijing, 11IHEP Beijing, 12IHEP Beijing, 13IHEP Beijing, 14IHEP Beijing, 15Univ. Zaragoza, 16Univ. Roma Tor Vergata and INAF
Category: Astrophysics

Galaxy hierarchical formation theories, numerical simulations, the discovery of the Sagittarius Dwarf Elliptical Galaxy (SagDEG) in 1994 and more recent investigations suggest that the dark halo of the Milky Way can have a rich phenomenology containing non thermalized substructures. In the present preliminary study, we investigate the case of the SagDEG (the best known satellite galaxy in the Milky Way crossing the solar neighbourhood) analyzing the consequences of its dark matter stream contribution to the galactic halo on the basis of the DAMA/NaI annual modulation data. The present analysis is restricted to some WIMP candidates and to some of the astrophysical, nuclear and particle Physics scenarios. Read More

2005Nov
Affiliations: 1Univ. and INFN Roma2, 2Univ. and INFN Roma2, 3Univ. and INFN Roma2, 4Univ. and INFN Roma2, 5Univ. and INFN Roma, 6Univ. and INFN Roma, 7Univ. and INFN Roma, 8INFN LNGS, 9IHEP Beijing, 10IHEP Beijing, 11IHEP Beijing, 12IHEP Beijing, 13IHEP Beijing
Category: Astrophysics

In this paper another class of Dark Matter candidate particles: the pseudoscalar and scalar light bosonic candidates, is discussed. Particular care is devoted to the study of the processes for their detection (which only involves electrons and photons/X-rays) in a suitable underground experimental set-up. For this purpose the needed calculations are developed and various related aspects and phenomenologies are discussed. Read More

2005Jan
Affiliations: 1Univ. and INFN Roma2, 2Univ. and INFN Roma2, 3Univ. and INFN Roma2, 4Univ. and INFN Roma2, 5Univ. and INFN Roma2, 6Univ. and INFN Roma2, 7Univ. and INFN Roma, 8Univ. and INFN Roma, 9IHEP Beijing, 10IHEP Beijing, 11IHEP Beijing, 12IHEP Beijing
Category: Astrophysics

The DAMA/NaI experiment (about 100 kg highly radiopure NaI(Tl)) was proposed, designed and realised to effectively investigate in a model independent way the presence of a Dark Matter particle component in the galactic halo by exploiting the annual modulation signature. With a total exposure of 107731 kg day, collected over seven annual cycles deep underground at the Gran Sasso National Laboratory of the I.N. Read More

2004May
Affiliations: 1Univ. and INFN Roma2, 2Univ. and INFN Roma2, 3Univ. and INFN Roma2, 4Univ. and INFN Roma2, 5Univ. and INFN Roma2, 6Univ. and INFN Roma, 7Univ. and INFN Roma, 8INFN LNGS, 9IHEP Beijing, 10IHEP Beijing, 11IHEP Beijing, 12IHEP Beijing
Category: Astrophysics

The DAMA/NaI set-up of the DAMA experiment has been operative during seven annual cycles and has investigated several rare processes. In particular, it has been realised in order to investigate the model independent annual modulation signature for Dark Matter particles in the galactic halo. With the total exposure collected in the seven annual cycles (107731 kg day) a model independent evidence for the presence of a Dark Matter particle component in the galactic halo has been pointed out at 6. Read More

2003Nov
Affiliations: 1Univ. and INFN Roma2, 2Univ. and INFN Roma2, 3Univ. and INFN Roma2, 4Univ. and INFN Roma2, 5Univ. and INFN Roma2, 6Univ. and INFN Roma, 7Univ. and INFN Roma, 8INFN LNGS, 9IHEP Beijing, 10IHEP Beijing, 11IHEP Beijing, 12IHEP Beijing
Category: Astrophysics

The about 100 kg highly radiopure NaI(Tl) set-up of the DAMA project (DAMA/NaI) took data over seven annual cycles up to July 2002 and has achieved results on various rare processes. Its main aim has actually been the exploitation of the model independent WIMP annual modulation signature. After this conference the total exposure, collected during the seven annual cycles, was released. Read More

2003Jul
Affiliations: 1Univ. and INFN Roma2, 2Univ. and INFN Roma2, 3Univ. and INFN Roma2, 4Univ. and INFN Roma2, 5Univ. and INFN Roma2, 6Univ. and INFN Roma2, 7Univ. and INFN Roma, 8Univ. and INFN Roma, 9IHEP Beijing, 10IHEP Beijing, 11IHEP Beijing, 12IHEP Beijing

Main arguments on the Dark Matter particle direct detection approach are addressed on the basis of the work and of the results of the about 100 kg highly radiopure NaI(Tl) DAMA experiment (DAMA/NaI), which has been operative at the Gran Sasso National Laboratory of the I.N.F. Read More

DAMA is an observatory for rare processes based on the development and use of various kinds of radiopure scintillators. Several low background set-ups have been realized with passing and many rare processes have been investigated. Main activities are briefly summarized in the following and the main arguments on the results achieved in the investigation of the WIMP annual modulation signature are addressed. Read More

DAMA is searching for rare processes by developing and using several kinds of radiopure scintillators: in particular, NaI(Tl), liquid Xenon and CaF$_2$(Eu). Here only the results released so far on the WIMP annual modulation signature are summarized and compared with results from other experiments, including the recent re-analysis of CDMS-I data. Next perspectives are also shortly addressed. Read More

DAMA is searching for rare processes by developing and using several kinds of radiopure scintillators: in particular, NaI(Tl), liquid Xenon and CaF$_2$(Eu). The main results are here summarized with particular attention to the investigation of the WIMP annual modulation signature. Read More