/ Experiment-Nucl arXiv:0804.3770


Energy dependence of Lambda and Xi production in central Pb+Pb collisions at A-20, A-30, A-40, A-80, and A-158 GeV measured at the CERN Super Proton Synchrotron


Alt, C. (Frankfurt U.) ; Anticic, T. (Boskovic Inst., Zagreb) ; Baatar, B. (Dubna, JINR) ; Barna, D. (Budapest, RMKI) ; Bartke, J. (Cracow, INP) ; Betev, L. (CERN) ; Bialkowska, H. (Warsaw, Inst. Nucl. Studies) ; Blume, C. (Frankfurt U.) ; Boimska, B. (Warsaw, Inst. Nucl. Studies) ; Botje, M. (NIKHEF, Amsterdam) ; Bracinik, J. (Comenius U.) ; Bramm, R. (Frankfurt U.) ; Buncic, P. (CERN) ; Cerny, V. (Comenius U.) ; Christakoglou, P. (Athens U.) ; Chung, P. (SUNY, Stony Brook, Chem. Dept.) ; Chvala, O. (Charles U.) ; Cramer, J.G. (CENPA, Seattle) ; Csato, P. (Budapest, RMKI) ; Dinkelaker, P. (Frankfurt U.) ; Eckardt, V. (Munich, Max Planck Inst.) ; Flierl, D. (Frankfurt U.) ; Fodor, Z. (Budapest, RMKI) ; Foka, P. (Darmstadt, GSI) ; Friese, V. (Darmstadt, GSI) ; Gal, J. (Budapest, RMKI) ; Gazdzicki, M. (Jan Kochanowski U.) ; Genchev, V. (Sofiya, Inst. Nucl. Res.) ; Gladysz, E. (Cracow, INP) ; Grebieszkow, K. (Warsaw U. of Tech.) ; Hegyi, S. (Budapest, RMKI) ; Hohne, C. (Darmstadt, GSI) ; Kadija, K. (Boskovic Inst., Zagreb) ; Karev, A. (Munich, Max Planck Inst.) ; Kikola, D. (Warsaw U. of Tech.) ; Kliemant, M. (Frankfurt U.) ; Kniege, S. (Frankfurt U.) ; Kolesnikov, V.I. (Dubna, JINR) ; Kornas, E. (Cracow, INP) ; Kowalski, M. (Cracow, INP) ; Kraus, I. (Darmstadt, GSI) ; Kreps, M. (Comenius U.) ; Laszlo, A. (Budapest, RMKI) ; Lacey, R. (SUNY, Stony Brook, Chem. Dept.) ; van Leeuwen, M. (NIKHEF, Amsterdam) ; Levai, P. (Budapest, RMKI) ; Litov, L. (Sofiya U.) ; Lungwitz, B. (Frankfurt U.) ; Makariev, M. (Sofiya U.) ; Malakhov, A.I. (Dubna, JINR) ; Mateev, M. (Sofiya U.) ; Melkumov, G.L. (Dubna, JINR) ; Meurer, C. (Frankfurt U.) ; Mischke, A. (NIKHEF, Amsterdam) ; Mitrovski, M. (Frankfurt U.) ; Molnar, J. (Budapest, RMKI) ; Mrowczynski, St. (Jan Kochanowski U.) ; Nicolic, V. (Boskovic Inst., Zagreb) ; Palla, G. (Budapest, RMKI) ; Panagiotou, A.D. (Athens U.) ; Panayotov, D. (Sofiya U.) ; Petridis, A. (Athens U.) ; Peryt, W. (Warsaw U. of Tech.) ; Pikna, M. (Comenius U.) ; Pluta, J. (Warsaw U. of Tech.) ; Prindle, D. (CENPA, Seattle) ; Puhlhofer, F. (Marburg U., ITP) ; Renfordt, R. (Frankfurt U.) ; Richard, A. (Frankfurt U.) ; Roland, C. (MIT) ; Roland, G. (MIT) ; Rybczynski, M. (Jan Kochanowski U.) ; Rybicki, A. (Cracow, INP) ; Sandoval, A. (Darmstadt, GSI) ; Schmitz, N. (Munich, Max Planck Inst.) ; Schuster, T. (Frankfurt U.) ; Seyboth, P. (Munich, Max Planck Inst.) ; Sikler, F. (Budapest, RMKI) ; Sitar, B. (Comenius U.) ; Skrzypczak, E. (Warsaw U.) ; Slodkowski, M. (Warsaw U. of Tech.) ; Stefanek, G. (Jan Kochanowski U.) ; Stock, R. (Frankfurt U.) ; Strabel, C. (Frankfurt U.) ; Strobele, H. (Frankfurt U.) ; Susa, T. (Boskovic Inst., Zagreb) ; Szentpetery, I. (Budapest, RMKI) ; Sziklai, J. (Budapest, RMKI) ; Szuba, M. (Warsaw U. of Tech.) ; Szymanski, P. (Warsaw, Inst. Nucl. Studies) ; Trubnikov, V. (Warsaw, Inst. Nucl. Studies) ; Utvic, M. (Frankfurt U.) ; Varga, D. (CERN) ; Vassiliou, M. (Athens U.) ; Veres, G.I. (MIT) ; Vesztergombi, G. (Budapest, RMKI) ; Vranic, D. (Darmstadt, GSI) ; Wetzler, A. (Frankfurt U.) ; Wlodarczyk, Z. (Jan Kochanowski U.) ; Wojtaszek, A. (Jan Kochanowski U.) ; Yoo, I.K. (Pusan Natl. U.) ; Zimanyi, J. (Budapest, RMKI)

Published in: Phys.Rev.
Year: 2008
Vol.: C78
Page No: 034918
Pages: 17

Abstract: Results on $\Lambda$, $\bar{\Lambda}}$, $\Xi^{-}$, and $\bar{\Xi}^{+}$ production in central Pb+Pb reactions at 20A, 30A, 40A, 80A, and 158A GeV are presented. The energy dependence of transverse mass spectra, rapidity spectra, and multiplicities is discussed. Comparisons to string hadronic models (UrQMD and HSD) and statistical hadron gas models are shown. While the latter provide a reasonable description of all particle yields, the first class of models fails to match the $\Xi^{-}$, and $\bar{\Xi}^{+}$ multiplicities.

Web-Page: http://inspirebeta.net/record/784085/files/bbarb_ratios_vs_sqrts.png; http://inspirebeta.net/record/784085/files/dndy_pi_vs_sqrts.png; http://inspirebeta.net/record/784085/files/dndy_vs_sqrts.png; http://inspirebeta.net/record/784085/files/lb_midrap_mt.png; http://inspirebeta.net/record/784085/files/lb_mt.png; http://inspirebeta.net/record/784085/files/lm_lb_eff_158_pt.png; http://inspirebeta.net/record/784085/files/lm_lb_eff_158_y.png; http://inspirebeta.net/record/784085/files/lm_lb_enh_vs_sqrts.png; http://inspirebeta.net/record/784085/files/lm_lb_fd_158_pt.png; http://inspirebeta.net/record/784085/files/lm_lb_fd_158_y.png; http://inspirebeta.net/record/784085/files/lm_lb_minv_20_158.png; http://inspirebeta.net/record/784085/files/lm_lb_xi_xb_y.png; http://inspirebeta.net/record/784085/files/lm_midrap_mt.png; http://inspirebeta.net/record/784085/files/lm_mt.png; http://inspirebeta.net/record/784085/files/lm_syserr_cuts_158_pt.png; http://inspirebeta.net/record/784085/files/lm_syserr_cuts_158_y.png; http://inspirebeta.net/record/784085/files/meanmt_vs_sqrts.png; http://inspirebeta.net/record/784085/files/mult_pi_vs_sqrts.png; http://inspirebeta.net/record/784085/files/mult_vs_sqrts.png; http://inspirebeta.net/record/784085/files/rms_vs_yproj.png; http://inspirebeta.net/record/784085/files/xb_midrap_mt.png; http://inspirebeta.net/record/784085/files/xb_mt.png; http://inspirebeta.net/record/784085/files/xi_midrap_mt.png; http://inspirebeta.net/record/784085/files/xi_mt.png; http://inspirebeta.net/record/784085/files/xi_syserr_cuts_158_pt.png; http://inspirebeta.net/record/784085/files/xi_syserr_cuts_158_y.png; http://inspirebeta.net/record/784085/files/xi_xb_eff_158_pt.png; http://inspirebeta.net/record/784085/files/xi_xb_eff_158_y.png; http://inspirebeta.net/record/784085/files/xi_xb_minv_2030_158.png

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