Latest Results from NA57

Giuseppe Bruno,F Antinori,P Bacon, Angela Badalá,R Barbera,A Belogianni,I J Bloodworth,M Bombara,S A Bull,R Caliandro, Myron Campbell,W Carena,N Carrer,R F Clarke, A Dainese, D Di Bari,S Di Liberto, R Divia',Davide Elia,David Evans,G. A. Feofilov,R A Fini,P Ganoti,B Ghidini,G Grella,H Helstrup,K F Hetland,A K Holme,A Jacholkowski,G. Jones,P Jovanovic, A Jusko,R Kamermans,J B Kinson,K Knudson,V. P. Kondratiev,I Kralik,A Kravcakova,P Kuijer,V Lenti,R Lietava,G Lovhoiden,Vito MANZARI,M A Mazzoni,F Meddi,A Michalon,M Morando,P I Norman,A Palmeri,G S Pappalardo,B Pastircak,R J Platt,E Quercigh,F Riggi,Dieter Röhrich,G. Romeo,Karel Safarik,L Sandor,E Schillings,G Segato,M Sene,R Sene,W Snoeys,F Soramel,M Spyropoulou Stassinaki,P Staroba,R Turrisi,T S Tveter,J Urban,P van de Ven,P Vande Vyvre,A Vascotto,T Vik,O Villalobos Baillie,L Vinogradov,T Virgili,M F Votruba,J Vrlakova,P Zavada

Proceedings of International Europhysics Conference on High Energy Physics — PoS(HEP2005)（2007）

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摘要

NA57 at the CERN SPS has studied the production of strange particles in Pb-Pb and p-Be collisions. Hyperon enhancements at 40 A GeV/c are presented and compared to results at 160 GeV/c beam momenta. The momentum spectra are analysed based on hydrodynamical models and freeze-out temperature, transverse and longitudinal flow velocities are extracted. Central-toperipheral nuclear modification factors at 160 A GeV/c are calculated.

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Supersymmetry

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