Aug 12 – 18, 2012
US/Eastern timezone

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Study of dynamical net charge fluctuations in Au+Au collisions at \sqrt{s_{NN}} = 39 GeV at STAR.

Aug 16, 2012, 4:00 PM
Regency 1/3 and Ambassador

Regency 1/3 and Ambassador

Poster Correlations and fluctuations Poster Session Reception


Bhanu Sharma (Panjab University)


The STAR experiment at Relativistic Heavy Ion Collider (RHIC) investigates the behaviour of strongly interacting matter at high density and searches for the possible formation of Quark Gluon Plasma (QGP). Event-by-event net charge fluctuation has been proposed as one of the indicators of QGP formation in heavy ion collisions. The fluctuation in net charge depends on the squares of the charges present in the system, which depends on the state from which it originates. The system passing through a QGP phase which has quarks as charge carriers, should result in a significantly different net charge fluctuation as compared to Hadron Gas (HG). The variance of the ratio of positive and negative charges scaled by the total charge particle multiplicity (a quantity called D) is approximately 4 times smaller for QGP as compared to HG [1]. We will present preliminary results on net charge fluctuations for Au+Au collisions at \sqrt{s_{NN}} = 39 GeV and will also present their dependence on energy and collision centrality by comparing to the published results [2].

Primary author

Bhanu Sharma (Panjab University)

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