CAN RECENT CHARGE FLUCTUATION CALCULATIONS BE A RELIABLE SIGNAL FOR A QGP AT RHIC?

LINDENBAUM, S.J. ; LONGACRE, R.S.

Brookhaven National Laboratory

关键词: Pions Plus;    Linear Colliders;    43 Particle Accelerators;    Quarks;    Gases;   

DOI  :  10.2172/785042
RP-ID  :  BNL--52636
RP-ID  :  AC02-98CH10886
RP-ID  :  785042

美国|英语

来源: UNT Digital Library

【 摘 要 】

The recent papers of Jeon and Koch[l] and Asakawa, Heinz and Muller[2] propose that the event by event fluctuations of the ratio of the positively charged and negatively charged pions could provide a distinct signal for a QGP at RHIC/LHC due to differences in those from the QGP phase, and the Hadron Gas Phase. In this paper we point out that aside from the questionability of the many assumptions in the treatment used, even following their approach there are other effects not considered, e.g. color charge fluctuations which we show could significantly or completely wash out the proposed signal. Therefore lack of observation of these charge fluctuation signals cannot lead one to conclude that a QGP is not formed at RHIC. A general discussion of experimental requirements for observation of such signals (if they exist) and how to interpret them is included.