System-size dependence of particle-ratio fluctuations in Pb + Pb collisions at 158A GeV

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. Chvála, J. G. Cramer, V. Eckardt, Z. FodorP. Foka, V. Friese, M. Gaåodzicki, K. Grebieszkow, C. Höhne, K. Kadija, A. Karev, V. I. Kolesnikov, T. Kollegger, M. Kowalski, D. Kresan, A. László, R. Lacey, M. Van Leeuwen, M. MaćKowiak-Pawłowska, 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. Słodkowski, 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

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

New measurements by the NA49 experiment of the centrality dependence of event-by-event fluctuations of the particle yield ratios (K++K -)/(π+-), (p+p̄) /(π+-), and (K++K-)/ (p+p̄) are presented for Pb+Pb collisions at 158A GeV. The absolute values of the dynamical fluctuations of these ratios, quantified by the measure σdyn, increase by about a factor of two from central to semiperipheral collisions. Multiplicity scaling scenarios are tested and found to apply for both the centrality and the previously published energy dependence of the (K++K-)/(π+-) and (p+p̄)/(π+-) ratio fluctuations. A description of the centrality and energy dependence of (K++K -)/(p+p̄) ratio fluctuations by a common scaling prescription is not possible since there is a sign change in the energy dependence.

Original languageEnglish
Article number024902
JournalPhysical Review C - Nuclear Physics
Volume87
Issue number2
DOIs
Publication statusPublished - Feb 1 2013

    Fingerprint

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

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., Chvála, O., Cramer, J. G., Eckardt, V., ... Wojtaszek-Szwarc, A. (2013). System-size dependence of particle-ratio fluctuations in Pb + Pb collisions at 158A GeV. Physical Review C - Nuclear Physics, 87(2), [024902]. https://doi.org/10.1103/PhysRevC.87.024902