Speaker
Dr
Aihong Tang
(Brookhaven National Laboratory)
Description
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 |
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Author
Dr
Aihong Tang
(Brookhaven National Laboratory)
