Energy dependence of Kπ, pπ, and Kp fluctuations in Au + Au collisions from √sNN=7.7 to 200 GeV

Adamczyk, L. and Planinić, Mirko and Poljak, Nikola and Zyzak, M. (STAR Collaboration) (2015) Energy dependence of Kπ, pπ, and Kp fluctuations in Au + Au collisions from √sNN=7.7 to 200 GeV. Physical Review C, 92 (2). 21901R-7. ISSN 0556-2813

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Abstract

A search for the quantum chromodynamics (QCD) critical point was performed by the STAR experiment at the BNL Relativistic Heavy Ion Collider, using dynamical fluctuations of unlike particle pairs. Heavy ion collisions were studied over a large range of collision energies with homogeneous acceptance and excellent particle identification, covering a significant range in the QCD phase diagram where a critical point may be located. Dynamical Kπ, pπ, and Kp fluctuations as measured by the STAR experiment in central 0–5% Au + Au collisions from center-of-mass collision energies √sNN=7.7 to 200 GeV are presented. The observable ν_dyn was used to quantify the magnitude of the dynamical fluctuations in event-by-event measurements of the Kπ, pπ, and Kp pairs. The energy dependences of these fluctuations from central 0–5% Au + Au collisions all demonstrate a smooth evolution with collision energy.

Item Type: Article
Date: 7 August 2015
Subjects: NATURAL SCIENCES > Physics > Nuclear Physics
Additional Information: Copyright (2015) by the American Physical Society. Received 20 October 2014; Published 7 August 2015.
Divisions: Faculty of Science > Department of Physics
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 22 Sep 2015 14:48
Last Modified: 22 Sep 2015 14:53
URI: http://digre.pmf.unizg.hr/id/eprint/4236

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