Search

Your search keyword '"NA57 Collaboration"' showing total 4 results
Start Over Author "NA57 Collaboration" Topic fos: physical sciences
4 results on '"NA57 Collaboration"'

1. Expansion dynamics of Pb–Pb collisions at 40AGeV/cviewed by negatively charged hadrons

Author

NA57 Collaboration, F Antinori, P Bacon, A Badalà, R Barbera, A Belogianni, I J Bloodworth, M Bombara, G E Bruno, S A Bull, R Caliandro, M Campbell, W Carena, N Carrer, R F Clarke, A Dainese, D Di Bari, S Di Liberto, R Divià, D Elia, D Evans, G A Feofilov, R A Fini, P Ganoti, B Ghidini, G Grella, H Helstrup, K F Hetland, A K Holme, A Jacholkowski, G T Jones, P Jovanovic, A Jusko, R Kamermans, J B Kinson, K Knudson, V Kondratiev, I Králik, A Kravčáková, P Kuijer, V Lenti, R Lietava, G Løvhøiden, V Manzari, M A Mazzoni, F Meddi, A Michalon, M Morando, P I Norman, A Palmeri, G S Pappalardo, B Pastirčák, R J Platt, E Quercigh, F Riggi, D Röhrich, G Romano, R Romita, K Šafařík, L Šándor, E Schillings, G Segato, M Sené, R Sené, W Snoeys, F Soramel, M Spyropoulou-Stassinaki, P Staroba, R Turrisi, T S Tveter, J Urbán, P van de Ven, P Vande Vyvre, A Vascotto, T Vik, O Villalobos Baillie, L Vinogradov, T Virgili, M F Votruba, J Vrláková, P Závada, Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and NA57

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), 010308 nuclear & particles physics, Nuclear Theory, Hadron, Dynamics (mechanics), FOS: Physical sciences, 12.38.Mh, 25.75.Nq, 25.75.Ld, 25.75.Dw, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Spectral line, Nuclear physics, Momentum, 0103 physical sciences, Thermal, Transverse mass, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Beam (structure)
Abstract

In this paper we present results on transverse mass spectra and Hanbury-Brown and Twiss correlation functions of negatively charged hadrons, which are expected to be mostly negative pions, measured in Pb-Pb collisions at 40 A GeV/c beam momentum. Based on these data, the collision dynamics and the space-time extent of the system at the thermal freeze-out are studied over a centrality range corresponding to the most central 53% of the Pb--Pb inelastic cross section. Comparisons with freeze-out conditions of strange particles and HBT results from other experiments are discussed., 29 pages, 18 figures

Published
2007
Full Text
View/download PDF

2. Enhancement of hyperon production at central rapidity in 158AGeV/cPb–Pb collisions

Author

NA57 Collaboration, F Antinori, P Bacon, A Badalà, R Barbera, A Belogianni, W Beusch, I J Bloodworth, M Bombara, G E Bruno, S A Bull, R Caliandro, M Campbell, W Carena, N Carrer, R F Clarke, A Dainese, D Di Bari, S Di Liberto, R Divià, D Elia, D Evans, G A Feofilov, R A Fini, P Ganoti, B Ghidini, G Grella, H Helstrup, K F Hetland, A K Holme, D Huss, A Jacholkowski, G T Jones, P Jovanovic, A Jusko, R Kamermans, J B Kinson, K Knudson, V Kondratiev, I Králik, A Kravčáková, P Kuijer, V Lenti, R Lietava, R A Loconsole, G Løvhøiden, V Manzari, M A Mazzoni, F Meddi, M E Michalon-Mentzer, A Michalon, M Morando, P I Norman, A Palmeri, G S Pappalardo, B Pastirčák, R J Platt, E Quercigh, F Riggi, D Röhrich, G Romano, K Šafařík, L Šándor, E Schillings, G Segato, M Sené, R Sené, W Snoeys, F Soramel, M Spyropoulou-Stassinaki, P Staroba, M Thompson, R Turrisi, T S Tveter, J Urbán, P van de Ven, P Vande Vyvre, A Vascotto, T Vik, O Villalobos Baillie, L Vinogradov, T Virgili, M F Votruba, J Vrláková, P Závada, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and NA57

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Nuclear Theory, Hyperon, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Strangeness, Lambda, 01 natural sciences, Omega, Nuclear physics, 0103 physical sciences, Transverse momentum, Rapidity, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Nucleon, Nuclear Physics
Abstract

Results are presented on hyperon and antihyperon production in Pb-Pb, pPb and pBe collisions at 158 GeV/c per nucleon. Lambda, Xi and Omega yields have been measured at central rapidity and medium transverse momentum as functions of the centrality of the collision. Comparing the yields in Pb-Pb to those in pBe interactions, strangeness enhancement is observed. The enhancement increases with the centrality and with the strangeness content of the hyperons, reaching a factor of about 20 for the Omega in the central Pb-Pb collisions., submitted to J. Phys. G.: Nucl. Part. Phys

Published
2006
Full Text
View/download PDF

3. First measurement of the strange particles Rcp nuclear modification factors in heavy-ion collisions at the SPS

Author

G.E. Bruno, A. Dainese, and NA57 Collaboration

Subjects
Physics, Nuclear and High Energy Physics, Hadron, General Physics and Astronomy, FOS: Physical sciences, Function (mathematics), Lambda, Collision, Nucleus-nucleus collisions, Nucleus-nucleus collisions, Strange particles, Nuclear physics, Strange particles, Heavy ion, Nuclear Physics - Experiment, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Centrality, Nuclear Experiment, Bar (unit)
Abstract

The NA57 experiment has measured the pt distributions of K0s, Lambda, and antiLambda particles in fixed-target Pb-Pb interactions at sqrt(s_{NN})=17.3 GeV as a function of the collision centrality. In this paper we study the central-to-peripheral nuclear modification factors and compare them to other measurements and to theoretical predictions., Contribution to the poster session of the Quark Matter 2005 Conference. To be published in Acta Physica Hungarica A, Heavy Ion Physics

Published
2005

4. Study of the transverse mass spectra of strange particles in Pb-Pb, collisions at 158 A GeV/c

Author

The NA57 Collaboration, Antinori, Federico, Bacon, P., Badalà, A., Barbera, R., Belogianni, A., Bhasin, A., Bloodworth, I. J., Bombara, M., Bruno, G. E., Bull, S. A., Caliandro, R., Campbell, M., Carena, W., Carrer, N., Clarke, R. F., Dainese, A., de Haas, A. P., de Rijke, P. C., Di Bari, D., Di Liberto, S., Divià, R., Elia, D., Evans, D., Feofilov, G. A., Fini, R. A., Ganoti, P., Ghidini, B., Grella, G., Helstrup, H., Hetland, K. F., Holme, A. K., Jacholkowski, A., Jones, G. T., Jovanovic, P., Jusko, A., Kamermans, R., Kinson, J. B., Knudson, K., Kolozhvari, A. A., Kondratiev, V., Králik, I., Krav áková, A., Kuijer, P., Lenti, V., Lietava, R., Løvhøiden, G., Manzari, V., Martinská, G., Mazzoni, M. A., Meddi, F., Michalon, A., Morando, Maurizio, Nappi, E., Navach, F., Norman, P. I., Palmeri, A., Pappalardo, G. S., Pastir ák, B., Pi út, J., Pi útová, N., Platt, R. J., Posa, F., Quercigh, E., Riggi, F., Röhrich, D., Romano, G., afa ík, K., Ándor, L., Schillings, E., Segato, Gianfranco, Sené, M., Sené, R., Snoeys, W., Soramel, Francesca, Spyropoulou Stassinaki, M., Staroba, P., Toulina, T. A., Turrisi, R., Tveter, T. S., Urbán, J., Valiev, F. F., van den Brink, A., van de Ven, P., Vande Vyvre, P., van Eijndhoven, N., van Hunen, J., Vascotto, A., Vik, T., Villalobos Baillie, O., Vinogradov, L., Virgili, T., Votruba, M. F., Vrláková, J., Závada, P., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), NA57, and Heyd, Yvette

Subjects
Physics, Nuclear and High Energy Physics, Hyperon, FOS: Physical sciences, Full sample, Spectral line, [PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Nuclear physics, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Transverse mass, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, Event (particle physics), Nuclear Physics
Abstract

The NA57 experiment has collected high statistics, high purity samples of \PKzS and \PgL, $\Xi$ and $\Omega$ hyperons produced in Pb-Pb collisions at 158 $A$ GeV/$c$. In this paper we present a study of the transverse mass spectra of these particles for a sample of events corresponding to the most central 53% of the inelastic Pb-Pb cross-section. We analyse the transverse mass distributions in the framework of the blast-wave model for the full sample and, for the first time at the SPS, as a function of the event centrality., Comment: 22 pages, 14 figures, submitted to J. Phys. G: Nucl. Phys

Published
2004

Catalog

Books, media, physical & digital resources
See catalog results