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

Abstract

A search for the quantum chromodynamics (QCD) critical point was performed by the STAR experiment at the 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.

Authors:
 [1]
  1. AGH Univ. of Science and Technology, Cracow (Poland). et al.
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1226045
Alternate Identifier(s):
OSTI ID: 1209194
Report Number(s):
BNL-108410-2015-JA
Journal ID: ISSN 0556-2813; PRVCAN; R&D Project: PO 003; KB0202012
Grant/Contract Number:  
SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C. Nuclear Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 2; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Relativistic Heavy Ion Collider

Citation Formats

Adamczyk, L. Energy dependence of Kπ, pπ and Kp fluctuations in Au+Au collisions from √sNN=7.7 to 200 GeV. United States: N. p., 2015. Web. doi:10.1103/PhysRevC.92.021901.
Adamczyk, L. Energy dependence of Kπ, pπ and Kp fluctuations in Au+Au collisions from √sNN=7.7 to 200 GeV. United States. https://doi.org/10.1103/PhysRevC.92.021901
Adamczyk, L. Fri . "Energy dependence of Kπ, pπ and Kp fluctuations in Au+Au collisions from √sNN=7.7 to 200 GeV". United States. https://doi.org/10.1103/PhysRevC.92.021901. https://www.osti.gov/servlets/purl/1226045.
@article{osti_1226045,
title = {Energy dependence of Kπ, pπ and Kp fluctuations in Au+Au collisions from √sNN=7.7 to 200 GeV},
author = {Adamczyk, L.},
abstractNote = {A search for the quantum chromodynamics (QCD) critical point was performed by the STAR experiment at the 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.},
doi = {10.1103/PhysRevC.92.021901},
journal = {Physical Review. C. Nuclear Physics},
number = 2,
volume = 92,
place = {United States},
year = {Fri Aug 07 00:00:00 EDT 2015},
month = {Fri Aug 07 00:00:00 EDT 2015}
}

Journal Article:

Citation Metrics:
Cited by: 15 works
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Figures / Tables:

FIG. 1 FIG. 1: $pπ$ fluctuations as a function of collision energy, expressed as $ν_{dyn,pπ}$. Shown are data from central (0-5%) Au+Au collisions at energies from $\sqrt{s_{NN}}$ = 7.7 to 200 GeV from the STAR experiment (black stars), predictions from UrQMD and HSD filtered through the same experimental acceptance (open stars andmore » open triangles, respectively), and data from central (0-3.5%) Pb+Pb collisions at energies from $\sqrt{s_{NN}}$ = 6.3 to 17.3 GeV from the NA49 experiment (blue squares).« less

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Works referencing / citing this record:

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Collective flows of $\alpha$ α -clustering 12C + 197Au by using different flow analysis methods
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Ω and ϕ production in Au + Au collisions at $$\sqrt{s_{_\mathrm{NN}}} = 11.5$$ s NN = 11.5   and 7.7 GeV in a dynamical quark coalescence model
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