Lambda, Xi and Omega Production at Mid-Rapidity in Pb-Pb and P-Pb Collisions at 158 A Gev/C

R Caliandro,E Andersen,F Antinori,N Armenise,H Bakke,J Ban, D Barberis,H Beker,W Beusch,IJ Bloodworth,J Bohm,M Campbell,E Cantatore,N Carrer,MG Catanesi,E Chesi, M Dameri,G Darbo,A Diaczek,D Di Bari,S Di Liberto,BC Earl,D Elia,D Evans,K Fanebust,RA Fini,JC Fontaine,J Ftacnik,B Ghidini,G Grella,M Guida,EHM Heijne,H Helstrup,AK Holme,D Huss,A Jacholkowski,GT Jones,P Jovanovic, A Jusko,T Kachelhoffer,JB Kinson,A Kirk,W Klempt,BTH Knudsen,K Knudson,I Kralik,V Lenti,R Lietava,RA Loconsole,G Lovhoiden,M Luptak,V Mack,V Manzari,P Martinengo,MA Mazzoni,F Meddi,A Michalon,ME Michalon-Mentzer,P Middelkamp,M Morando,MT Muciaccia,E Nappi,F Navach,PI Norman,B Osculati,B Pastircak,F Pellegrini,K Piska,F Posa,E Quercigh,RA Ricci,G Romano,G Rosa,L Rossi,H Rotscheidt,K Safarik,S Saladino,C Salvo,L Sandor,T Scognetti,G Segato,M Sene,R Sene,S Simone,W Snoeys,P Staroba,S Szafran,M Thompson,TF Thorsteinsen,G Tomasicchio,GD Torrieri,TS Tveter,J Urban,M Venables,OV Baillie,T Virgili,A Volte,MF Votruba,P Zavada

Journal of physics G, Nuclear and particle physics（1999）

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摘要

Lambda, Xi and Omega yields and transverse mass spectra measured at central rapidity in Pb-Pb and p-Pb collisions at 158 A GeV/c are presented. The yields in Pb-Pb interactions are given as a function of the collision centrality and compared with those obtained from p-Pb collisions. The dependence of hyperon yields on the centrality of the impact and on the strangeness content of the hyperon are discussed.

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