Energy Dependence of $K/\pi$, $p/\pi$, and $K/p$ Fluctuations in Au+Au Collisions from $\rm \sqrt{s_{NN}}$ = 7.7 to 200 GeV - INSPIRE

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Energy Dependence of $K/\pi$ , $p/\pi$ , and $K/p$ Fluctuations in Au+Au Collisions from $\rm \sqrt{s_{NN}}$ = 7.7 to 200 GeV

STAR

Collaboration

Oct 20, 2014

7 pages

Published in:

Phys.Rev.C 92 (2015) 2, 021901

Published: Aug 7, 2015

e-Print:

1410.5375 [nucl-ex]

DOI:

10.1103/PhysRevC.92.021901

Experiments:

BNL-RHIC-STAR

View in:

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Abstract: (APS)

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 νdyn 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.

Note:

7 pages, 3 figures

25.75.Gz
quantum chromodynamics: critical phenomena
STAR
Brookhaven RHIC Coll
gold
particle identification
fluctuation
pi K
pi p
K p

References(36)

Figures(3)

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