Narrowing of the Balance Function with Centrality in Au+Au Collisions at sqrt(sNN) = 130 GeV

Details Narrowing of the Balance Function with Centrality in Au+Au Collisions at sqrt(sNN) = 130 GeV Narrowing of the Balance Function with Centrality in Au+Au Collisions at sqrt(sNN) = 130 GeV

2003-01-24

arxiv.org/abs/nucl-ex/0301014v1

Phys.Rev.Lett.90:172301,2003

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 4 figures, submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.90.172301

The balance function is a new observable based on the principle that charge is locally conserved when particles are pair produced. Balance functions have been measured for charged particle pairs and identified charged pion pairs in Au+Au collisions at $\sqrt{s_{NN}}$ = 130 GeV at the Relativistic Heavy Ion Collider using STAR. Balance functions for peripheral collisions have widths consistent with model predictions based on a superposition of nucleon-nucleon scattering. Widths in central collisions are smaller, consistent with trends predicted by models incorporating late hadronization.

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