Beam Energy Dependency of Clan Multiplicity at RHIC

20 May 2014, 16:30
spectrum (darmstadtium)



Board: I-41
Poster Correlations and Fluctuations Poster session


Dr Aihong Tang (Brookhaven National Laboratory)


Negative binomial distribution has been widely used in describing the multiplicity distribution in high energy collisions. The parameters of a negative binomial distribution can be transformed to clan parameters, namely, the average number of clans and the average number of particles per clan (clan multiplicity) [1]. Clan parameters have been used to identify abnormalities due to a phase transition. In this talk, STAR's measurement of clan multiplicity will be presented for AuAu collisions at center-of-mass energies of 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV per nucleon-nucleon pair. The energy dependence will be studied for events from various centrality classes. The implications of these results to the search for possible signals of a phase transition and/or a critical point will be discussed. [1] A. Giovanni, L. Van Hove, Z. Phys. C30 391 (1986).
On behalf of collaboration: STAR

Primary author

Dr Aihong Tang (Brookhaven National Laboratory)

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