System-size and centrality dependence of charged kaon and pion production in nucleus-nucleus collisions at 40A GeV and 158A GeV beam energy

T. Anticic, B. Baatar, D. Barna, J. Bartke, H. Beck, L. Betev, H. Białkowska, C. Blume, M. Bogusz, B. Boimska, J. Book, M. Botje, P. Bunčić, T. Cetner, P. Christakoglou, P. Chung, O. Chvala, J. G. Cramer, P. Dinkelaker, V. EckardtZ. Fodor, P. Foka, V. Friese, M. Gadzicki, K. Grebieszkow, C. Höhne, K. Kadija, A. Karev, M. Kliemant, V. I. Kolesnikov, T. Kollegger, M. Kowalski, D. Kresan, A. Laszlo, R. Lacey, M. Van Leeuwen, B. Lungwitz, M. MacKowiak, M. Makariev, A. I. Malakhov, M. Mateev, G. L. Melkumov, M. Mitrovski, St Mrówczyński, V. Nicolic, G. Pálla, A. D. Panagiotou, W. Peryt, J. Pluta, D. Prindle, F. Pühlhofer, R. Renfordt, C. Roland, G. Roland, M. Rybczyński, A. Rybicki, A. Sandoval, N. Schmitz, T. Schuster, P. Seyboth, F. Siklér, E. Skrzypczak, M. Slodkowski, G. Stefanek, R. Stock, H. Ströbele, T. Susa, M. Szuba, M. Utvić, D. Varga, M. Vassiliou, G. I. Veres, G. Vesztergombi, D. Vranić, Z. Włodarczyk, A. Wojtaszek-Szwarc

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Abstract

Measurements of charged pion and kaon production are presented in centrality selected Pb+Pb collisions at 40A GeV and 158A GeV beam energy as well as in semicentral C+C and Si+Si interactions at 40A GeV. Transverse mass spectra, rapidity spectra, and total yields are determined as a function of centrality. The system-size and centrality dependence of relative strangeness production in nucleus-nucleus collisions at 40A GeV and 158A GeV beam energy are derived from the data presented here and from published data for C+C and Si+Si collisions at 158A GeV beam energy. At both energies a steep increase with centrality is observed for small systems followed by a weak rise or even saturation for higher centralities. This behavior is compared to calculations using transport models (ultra-relativistic quantum molecular dynamics and hadron-string dynamics), a percolation model, and the core-corona approach.

Original languageEnglish
Article number054903
JournalPhysical Review C - Nuclear Physics
Volume86
Issue number5
DOIs
Publication statusPublished - Nov 9 2012

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Anticic, T., Baatar, B., Barna, D., Bartke, J., Beck, H., Betev, L., Białkowska, H., Blume, C., Bogusz, M., Boimska, B., Book, J., Botje, M., Bunčić, P., Cetner, T., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Dinkelaker, P., ... Wojtaszek-Szwarc, A. (2012). System-size and centrality dependence of charged kaon and pion production in nucleus-nucleus collisions at 40A GeV and 158A GeV beam energy. Physical Review C - Nuclear Physics, 86(5), [054903]. https://doi.org/10.1103/PhysRevC.86.054903