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,R Caliandro,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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Abstract

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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Key words

collisions,gev/c,mid-rapidity

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