1. Results from NA57
- Author
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Helstrup, H., Antinori, F., Bacon, P.A., Badala, A., Barbera, R., Belogianni, A., Bloodworth, I.J., Bombara, M., Bruno, G., Bull, S.A., Caliandro, R., Campbell, M., Carena, W., Carrer, N., Clarke, R.F., Dainese, A., Di Bari, D., Di Liberto, S., Divia, R., Elia, D., Evans, D., Feofilov, G.A., Fini, R., Ganoti, P., Ghidini, B., Grella, G., Hetland, K.F., Holme, A.K., Jacholkowski, A., Jones, G.T., Jovanovic, P., Jusko, A., Kamermans, R., Kinson, J.B., Knudson, K., Kondratiev, V., Kralik, I., Kravakova, A., Kuijer, P., Lenti, V., Lietava, R., Lovhoiden, G., Manzari, V., Mazzoni, M.A., Meddi, F., Michalon, A., Morando, M., Norman, P.I., Palmeri, A., Pappalardo, G.S., Pastirak, B., Platt, R.J., Quercigh, E., Riggi, F., Rohrich, D., Romano, G., Safarik, K., Sandor, L., Schillings, E., Segato, G., Sene, M., Sene, R., Snoeys, W., Soramel, F., Spyropoulou-Stassinaki, M., Staroba, P., Turrisi, R., Tveter, T.S., Urban, Jakub, Van De Ven, P., Vande Vyvre, P., Vascotto, A., Vik, T., Villalobos Baillie, O., Vinogradov, I., Virgili, T., Votruba, M.F., Vrlakova, J., Zavada, P., European Organization for Nuclear Research (CERN), 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), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), NA57, and Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Meson ,010308 nuclear & particles physics ,Nuclear Theory ,Strangeness ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,01 natural sciences ,Baryon ,Nuclear physics ,Transverse plane ,0103 physical sciences ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,Rapidity ,010306 general physics ,Nuclear Experiment ,Longitudinal wave ,Beam (structure) ,Blast wave - Abstract
International audience; The NA57 experiment has measured strange baryon and antibaryon production in Pb-Pb collisions at 40 A GeV/c and 158 A GeV/c beam momenta. Expansion dynamics has been investigated; transverse dynamics using blast wave fits, longitudinal dynamics obtained from rapidity distributions. HBT analysis gives results compatible with those obtained by the other methods. Similar values are observed for the transverse and longitudinal ow parameters. Particles carrying all levels of strangeness have been studied. Enhancement factors increase with the strangeness content of the particle, reaching above 20 for $\Omega$s in central collisions. Enhancement values are strikingly similar for SPS and RHIC energies. Centralto-peripheral nuclear modication factors have been measured. The baryon/meson pattern displays similarities with that observed at RHIC
- Published
- 2006