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