Measurement of charge multiplicity asymmetry correlations in high-energy nucleus-nucleus collisions at √sNN=200 GeV

Adamczyk, L. and Planinić, Mirko and Poljak, Nikola and Zyzak, M. (STAR Collaboration) (2014) Measurement of charge multiplicity asymmetry correlations in high-energy nucleus-nucleus collisions at √sNN=200 GeV. Physical Review C, 89 (4). pp. 44908-24. ISSN 0556-2813

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Abstract

A study is reported of the same- and opposite-sign charge-dependent azimuthal correlations with respect to the event plane in Au + Au collisions at √sNN=200 GeV. The charge multiplicity asymmetries between the up/down and left/right hemispheres relative to the event plane are utilized. The contributions from statistical fluctuations and detector effects were subtracted from the (co-)variance of the observed charge multiplicity asymmetries. In the mid- to most-central collisions, the same- (opposite-) sign pairs are preferentially emitted in back-to-back (aligned on the same-side) directions. The charge separation across the event plane, measured by the difference, Δ, between the like- and unlike-sign up/down-left/right correlations, is largest near the event plane.

Item Type: Article
Date: April 2014
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2014) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 05 Jun 2014 09:00
Last Modified: 10 Jun 2014 13:18
URI: http://digre.pmf.unizg.hr/id/eprint/2225

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