Energy dependence of Kπ, pπ, and Kp fluctuations in Au + Au collisions from √s[subscript NN] = 7.7 to 200 GeV
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PhysRevC.92.021901.pdf
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Author(s)
Adamczyk, L.
Adkins, J. K.
Agakishiev, G.
Aggarwal, M. M.
Ahammed, Z.
Alekseev, I.
Alford, J.
Aparin, A.
Arkhipkin, D.
Aschenauer, E. C.
Date Issued
August 2015
Journal
Physical Review C
Publisher
American Physical Society
Citation
Adamczyk, L., J. K. Adkins, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, I. Alekseev, J. Alford, et al. “Energy Dependence of Kπ, pπ, and Kp Fluctuations in Au + Au Collisions from √s[subscript NN] = 7.7 to 200 GeV.” Physical Review C 92, no. 2 (August 2015). © 2015 American Physical Society
Version
Final published version
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 √s[subscript NN] = 7.7 to 200 GeV are presented. The observable ν[subscript 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.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevC.92.021901
