Search for Critical Behaviors by RHIC-PHENIX

  • Integrated two particle correlation functions have been extracted from charge particle multiplicity density fluctuations in pseudorapidity space by analyzing Au+Au collision events at sNN=200GeV taken by RHIC-PHENIX. The correlation lengths as a function of the number of participants Np indicate a non monotonic increase at around Np=100 and the corresponding energy density based on the Bjorken picture is εBjτ~2.5GeV.fm-2. This could be a symptom of a critical behavior.
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  • [1] . Adcox K et al. (PHENIX Collaboration). Nucl. Instrum.Methods, 2003, A499: 4692. Adler S S et al. (PHENIX Collaboration). Phys. Rev., 2005,C71: 034908; 2005, C71: 049901; arXiv:nucl-ex/04090153. Ginzburg V L, Landau L D. Zh. Eksp. Teor. Fiz., 1950, 20:10644. Ornstein L S, Zernike F. Proc. Sect. Sci. K. Med. Akad.Wet., 1914, 17: 7935. Scalapino D J, Sugar R L. Phys. Rev., 1973, D8: 22846. De Wolf E A, Dremin I M, Kittel W. Phys. Rept., 1996,270: 1. arXiv:hep-ph/95083257. Bialas A, Peschanski R. Nucl. Phys., 1986, B273: 703;Bialas A, Peschanski R. Nucl. Phys., 1988, B308: 8578. Zajc W A. Phys. Lett., 1986, B175: 2199. Adler S S et al. (PHENIX Collaboration). Phys. Rev. Lett.,2003, 91: 07230110. Alessandro B et al. (NA50 Collaboration). Eur. Phys. J.,2005, C39: 335. arXiv:hep-ex/0412036
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K.Homma. Search for Critical Behaviors by RHIC-PHENIX[J]. Chinese Physics C, 2007, 31(12): 1145-1148.
K.Homma. Search for Critical Behaviors by RHIC-PHENIX[J]. Chinese Physics C, 2007, 31(12): 1145-1148. shu
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Received: 2007-07-17
Revised: 1900-01-01
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Search for Critical Behaviors by RHIC-PHENIX

    Corresponding author: K.Homma,
  • Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Japan

Abstract: Integrated two particle correlation functions have been extracted from charge particle multiplicity density fluctuations in pseudorapidity space by analyzing Au+Au collision events at sNN=200GeV taken by RHIC-PHENIX. The correlation lengths as a function of the number of participants Np indicate a non monotonic increase at around Np=100 and the corresponding energy density based on the Bjorken picture is εBjτ~2.5GeV.fm-2. This could be a symptom of a critical behavior.

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