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Xi^- and anti-Xi^+ Production in Central Pb+Pb Collisions at 158 GeV/c per Nucleon

Afanasiev, SV; Anticic, T; Barna, D; Bartke, J; Barton, RA; Betev, L; Bialkowska, H; Billmeier, A; Blume, C; Blyth, CO; Boimska, B; Botje, M; Bracinik, J; Bramm, R; Brun, R; Buncic, P; Cerny, V; Cramer, JG; Csato, P; Dinkelaker, P; Eckardt, V; Filip, P; Fischer, HG; Fodor, Z; Foka, P; Freund, P; Friese, V; Gal, J; Gazdzicki, M; Georgopoulos, G; Gladysz, E; Hegyi, S; Hohme, C; Igo, G; Jones, PG; Kadija, K; Karev, A; Kolesnikov, VI; Kollegger, T; Kowalski, M; Kraus, I; Kreps, M; van Leeuwen, M; Levai, P; Malakhov, AI; Margetis, S; Markert, C; Mayes, BW; Melkumov, GL; Mischke, A; Molnar, J; Nelson, JM; Palla, G; Panagiotou, AD; Perl, K; Petridis, A; Pikna, M; Pinsky, L; Puhlhofer, F; Reid, JG; Renfordt, R; Retyk, W; Roland, C; Roland, G; Rybicki, A; Sammer, T; Sandoval, A; Sann, H; Schmitz, N; Seyboth, P; Sikler, F; Sitar, B; Skrzypczak, E; Squier, GTA; Stock, R; Strobele, H; Susa, T; Szentpetery, I; Sziklai, J; Trainor, TA; Varga, D; Vassiliou, M; Veres, GI; Vesztergombi, G; Vranic, D; Wenig, S; Wetzler, J; Whitten, C; Yoo, IK; Zaranek, J; Zimanyi, J; (2002) Xi^- and anti-Xi^+ Production in Central Pb+Pb Collisions at 158 GeV/c per Nucleon. Physics Letters B, 538 (3). pp. 275-281. ISSN 0370-2693

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Results of the production of Xi and Xi-bar hyperons in central Pb+Pb interactions at 158 GeV/c per nucleon are presented. This analysis utilises a global reconstruction procedure, which allows a measurement of 4pi integrated yields to be made for the first time. Inverse slope paramters, which are determined from an exponential fit to the transverse mass spectra, are shown. Central rapidity densities are found to be 1.49 +- 0.08 and 0.33 +- 0.04 per event per unit of rapidity for Xi and Xi-bar respectively. Yields integrated to full phase space are 4.12 +- 0.02 and 0.77 +- 0.04 for Xi and Xi-bar. The ratio of Xi-bar/Xi at mid-rapidity is 0.22 +- 0.03.

Item Type: Article
Uncontrolled Keywords: cascade production; central Pb+Pb collisions; NA49 experiment
Subjects: NATURAL SCIENCES > Physics
Divisions: Division of Experimental Physics
Project titleProject leaderProject codeProject type
Eksperimentalna fizika visokih energijaKrešo Kadija00980208UNSPECIFIED
Depositing User: Tome Antičić
Date Deposited: 15 Mar 2016 17:16
DOI: 10.1016/S0370-2693(02)01970-6

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