Electric charge fluctuations in central Pb+Pb collisions at 20A, 30A, 404, 80A, and 158A GeV

C. Alt, T. Anticic, B. Baatar, D. Barna, J. Bartke, M. Behler, L. Betev, H. Bialkowska, A. Billmeier, C. Blume, B. Boimska, M. Botje, J. Bracinik, R. Bramm, R. Brun, P. Bunčić, V. Cerny, P. Christakoglou, O. Chvala, J. G. CramerP. Csató, N. Darmenov, A. Dimitrov, P. Dinkelaker, V. Eckardt, P. Filip, D. Flierl, Z. Fodor, P. Foka, P. Freund, V. Friese, J. Gál, M. Gaździcki, G. Georgopoulos, E. Gladysz, K. Grebieszkow, S. Hegyi, C. Höhne, K. Kadija, A. Karev, M. Kliemant, S. Kniege, V. I. Kolesnikov, T. Kollegger, E. Kornas, R. Korus, M. Kowalski, I. Kraus, M. Kreps, M. van Leeuwen, P. Lévai, L. Litov, B. Lungwitz, M. Makariev, A. I. Malakhov, C. Markert, M. Mateev, B. W. Mayes, G. L. Melkumov, C. Meurer, A. Mischke, M. Mitrovski, J. Molnár, S. Mrówczyński, G. Pálla, A. D. Panagiotou, D. Panayotov, A. Petridis, M. Pikna, L. Pinsky, F. Pühlhofer, J. G. Reid, R. Renfordt, A. Richard, C. Roland, G. Roland, M. Rybczyński, A. Rybicki, A. Sandoval, H. Sann, N. Schmitz, P. Seyboth, F. Siklér, B. Sitar, E. Skrzypczak, G. Stefanek, R. Stock, H. Ströbele, T. Susa, I. Szentpétery, J. Sziklai, T. A. Trainor, D. Varga, M. Vassiliou, G. I. Veres, G. Vesztergombi, D. Vranic, A. Wetzler, Z. Wlodarczyk, I. K. Yoo, J. Zaranek, J. Zimányi

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Abstract

Results are presented on event-by-event electric charge fluctuations in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV. The observed fluctuations are close to those expected for a gas of pions correlated by global charge conservation only. These fluctuations are considerably larger than those calculated for an ideal gas of deconfined quarks and gluons. The present measurements do not necessarily exclude reduced fluctuations from a quark-gluon plasma because these might be masked by contributions from resonance decays.

Original languageEnglish
Article number064903
Pages (from-to)064903-1-064903-7
JournalPhysical Review C - Nuclear Physics
Volume70
Issue number6
DOIs
Publication statusPublished - Dec 2004

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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  • Cite this

    Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Behler, M., Betev, L., Bialkowska, H., Billmeier, A., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Brun, R., Bunčić, P., Cerny, V., Christakoglou, P., Chvala, O., ... Zimányi, J. (2004). Electric charge fluctuations in central Pb+Pb collisions at 20A, 30A, 404, 80A, and 158A GeV. Physical Review C - Nuclear Physics, 70(6), 064903-1-064903-7. [064903]. https://doi.org/10.1103/PhysRevC.70.064903