CPOD International Workshop at GSI Darmstadt
July 9 - 13, 2007 -
Registered Participants Information

Title:	Dr.
Last Name:	Homma
First Name:	Kensuke
E-Mail:	hommahepl.hiroshima-u.ac.jp
Affiliation for Badge:	Hiroshima University
Institute:	Hiroshima University
Address (Street):	1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima
Postal Code, City:	739-8526
Country:	Japan
Phone:	+81-82-424-7375
Fax:	+81-82-424-0717
Arrival Date:	July 8
Departure Date:	July 13
Hotel Information:	Others...
Payment:	Cash at the conference site
Contribution
Author(s):	Kensuke Homma for the PHENIX collaboration
Institute(s):	Hiroshima University
Title:	Critical behaviors in multiplicity flucuations at RHIC-PHENIX
Abstract:	Strongly interacting high dense matter has been created at RHIC. It exhibits natures of a fluid with low viscosity and quark-like degrees of freedom. Therefore, it is naturally expected that there exists critical systems where the transition occurs from nomal nuclear matter. It is crucial for experiments to identify the critical behaviors among available collision systems at RHIC between the highest energy density system, Au+Au at $\sqrt{s_{NN}}$=200GeV and the lower energy density systems. In this point of view, we summarize results on mulcipliticy fluctuations in the PHENIX experiment. As the global quantity, we present results on multiplicity fluctuations. In addition, we present results on the differential analysis of the multiplicity flucuations as a function of pseudorapidity, which suggests a possible critical behavior at $\epsilon_{Bj} \tau \sim 2.4$GeV/fm${}^2 \cdot c$.