CERN Accelerating science

Article
Report number nucl-ex/9810005
Title $\Xi$ and $\overline{\Xi}$ production in 158 GeV/nucleon Pb + Pb collisions
Author(s)

Appelshäuser, H. (Darmstadt, GSI) ; Bächler, J. (CERN) ; Bailey, S.J. (Washington U., Seattle) ; Barna, D. (Budapest, RMKI) ; Barnby, L.S. (Birmingham U.) ; Bartke, J. (Cracow, INP) ; Barton, R.A. (Birmingham U.) ; Białkowska, H. (Warsaw, Inst. Nucl. Studies) ; Billmeier, A. (Frankfurt U.) ; Blyth, C.O. (Birmingham U.) ; Bock, R. (Darmstadt, GSI) ; Bormann, C. (Frankfurt U.) ; Brady, F.P. (UC, Davis) ; Brockmann, R. (Darmstadt, GSI) ; Brun, R. (CERN) ; Bunčić, P. (CERN ; Frankfurt U.) ; Caines, H.L. (Birmingham U.) ; Carr, L.D. (Washington U., Seattle) ; Cebra, D. (UC, Davis) ; Cooper, G.E. (LBL, Berkeley ; UC, Berkeley) ; Cramer, J.G. (Washington U., Seattle) ; Cristinziani, M. (Philipps U. Marburg) ; Csato, P. (Budapest, RMKI) ; Dunn, J. (UC, Davis) ; Eckardt, V. (Munich, Max Planck Inst.) ; Eckhardt, F. (Philipps U. Marburg) ; Ferguson, M.I. (CERN) ; Fischer, H.G. (CERN) ; Flierl, D. (Frankfurt U.) ; Fodor, Z. (Budapest, RMKI) ; Foka, P. (Frankfurt U.) ; Freund, P. (Munich, Max Planck Inst.) ; Friese, V. (Philipps U. Marburg) ; Fuchs, M. (Frankfurt U.) ; Gabler, F. (Frankfurt U.) ; Ganz, R. (Munich, Max Planck Inst.) ; Geist, W. (Munich, Max Planck Inst.) ; Gal, J. (Budapest, RMKI) ; Gaździcki, M. (Frankfurt U.) ; Gładysz, E. (Cracow, INP) ; Grebieszkow, J. (Warsaw U.) ; Günther, J. (Frankfurt U.) ; Harris, J.W. (Yale U.) ; Hegyi, S. (Budapest, RMKI) ; Henkel, T. (Philipps U. Marburg) ; Hill, L.A. (Birmingham U.) ; Hümmler, H. (Frankfurt U.) ; Igo, G. (UCLA) ; Irmscher, D. (Darmstadt, GSI) ; Jacobs, P. (LBL, Berkeley ; UC, Berkeley) ; Jones, P.G. (Birmingham U.) ; Kadija, K. (Boskovic Inst., Zagreb ; Munich, Max Planck Inst.) ; Kolesnikov, V.I. (Dubna, JINR) ; Konashenok, A. (LBL, Berkeley ; UC, Berkeley) ; Kowalski, M. (Cracow, INP) ; Lasiuk, B. (UCLA ; Yale U.) ; Lévai, P. (Budapest, RMKI) ; Liu, F. (Frankfurt U.) ; Malakhov, A.I. (Dubna, JINR) ; Margetis, S. (Kent State U.) ; Markert, C. (Darmstadt, GSI) ; Melkumov, G.L. (Dubna, JINR) ; Mock, A. (Munich, Max Planck Inst.) ; Molnár, J. (Budapest, RMKI) ; Nelson, J.M. (Birmingham U.) ; Oldenburg, M. (Frankfurt U.) ; Odyniec, G. (LBL, Berkeley ; UC, Berkeley) ; Palla, G. (Budapest, RMKI) ; Panagiotou, A.D. (Athens U.) ; Petridis, A. (Athens U.) ; Piper, A. (Philipps U. Marburg) ; Porter, R.J. (LBL, Berkeley ; UC, Berkeley) ; Poskanzer, A.M. (LBL, Berkeley ; UC, Berkeley) ; Prindle, D.J. (Washington U., Seattle) ; Pühlhofer, F. (Philipps U. Marburg) ; Rauch, W. (Munich, Max Planck Inst.) ; Reid, J.G. (Washington U., Seattle) ; Renfordt, R. (Frankfurt U.) ; Retyk, W. (Warsaw U.) ; Ritter, H.G. (LBL, Berkeley ; UC, Berkeley) ; Röhrich, D. (Frankfurt U.) ; Roland, C. (Darmstadt, GSI) ; Roland, G. (Frankfurt U.) ; Rudolph, H. (Frankfurt U.) ; Rybicki, A. (Cracow, INP) ; Sandoval, A. (Darmstadt, GSI) ; Sann, H. (Darmstadt, GSI) ; Semenov, A.Yu. (Dubna, JINR) ; Schäfer, E. (Munich, Max Planck Inst.) ; Schmischke, D. (Frankfurt U.) ; Schmitz, N. (Munich, Max Planck Inst.) ; Schönfelder, S. (Munich, Max Planck Inst.) ; Seyboth, P. (Munich, Max Planck Inst.) ; Seyerlein, J. (Munich, Max Planck Inst.) ; Sikler, F. (Budapest, RMKI) ; Skrzypczak, E. (Warsaw U.) ; Snellings, R. (LBL, Berkeley ; UC, Berkeley) ; Squier, G.T.A. (Birmingham U.) ; Stock, R. (Frankfurt U.) ; Ströbele, H. (Frankfurt U.) ; Struck, Chr. (Philipps U. Marburg) ; Susa, T. (Boskovic Inst., Zagreb) ; Szentpetery, I. (Budapest, RMKI) ; Sziklai, J. (Budapest, RMKI) ; Toy, M. (LBL, Berkeley ; UC, Berkeley ; UCLA) ; Trainor, T.A. (Washington U., Seattle) ; Trentalange, S. (UCLA) ; Ullrich, T. (Yale U.) ; Vassiliou, M. (Athens U.) ; Veres, G. (Budapest, RMKI) ; Vesztergombi, G. (Budapest, RMKI) ; Vranić, D. (CERN ; Boskovic Inst., Zagreb) ; Wang, F. (LBL, Berkeley ; UC, Berkeley) ; Weerasundara, D.D. (Washington U., Seattle) ; Wenig, S. (CERN) ; Whitten, C. (UCLA) ; Wienold, T. (LBL, Berkeley ; UC, Berkeley) ; Wood, L. (UC, Davis) ; Xu, N. (LBL, Berkeley ; UC, Berkeley) ; Yates, T.A. (Birmingham U.) ; Zimanyi, J. (Budapest, RMKI) ; Zhu, X.-Z. (Washington U., Seattle) ; Zybert, R. (Birmingham U.)

Publication 1998
Number of pages 15
Note 15 pages
In: Phys. Lett. B 444 (1998) 523
DOI 10.1016/S0370-2693(98)01399-9
Subject category Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN SPS ; NA49
Abstract We report measurements of Xi and Xi-bar hyperon absolute yields as a function of rapidity in 158 GeV/c Pb+Pb collisions. At midrapidity, dN/dy = 2.29 +/- 0.12 for Xi, and 0.52 +/- 0.05 for Xi-bar, leading to the ratio of Xi-bar/Xi = 0.23 +/- 0.03. Inverse slope parameters fitted to the measured transverse mass spectra are of the order of 300 MeV near mid-rapidity. The estimated total yield of Xi particles in Pb+Pb central interactions amounts to 7.4 +/- 1.0 per collision. Comparison to Xi production in properly scaled p+p reactions at the same energy reveals a dramatic enhancement (about one order of magnitude) of Xi production in Pb+Pb central collisions over elementary hadron interactions.
Copyright/License Elsevier Science B.V.

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 Записът е създаден на 1998-10-08, последна промяна на 2024-05-08


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