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Title: Initial state q q g correlations as a background for the chiral magnetic effect in collision of small systems

Abstract

Motivated by understanding the background to chiral magnetic effect in proton-nucleus collisions from first principles, we compute the three particle correlation in the projectile wave function. We extract the correlations between two quarks and one gluon in the framework of the color glass condensate. This is related to the same-charge correlation of the conventional observable for the chiral magnetic effect. We show that there are two different contributions to this correlation function. One contribution is rapidity-independent and as such can be identified with the pedestal; while the other displays rather strong rapidity dependence. The pedestal contribution and the rapidity-dependent contribution at large rapidity separation between the two quarks result in the negative same charge correlations, while at small rapidity separation the second contribution changes sign. We argue that the computed initial state correlations might be partially responsible for the experimentally observed signal in proton-nucleus collisions.

Authors:
 [1];  [2];  [3]
  1. Univ. of Connecticut, Storrs, CT (United States). Dept. of Physics; Univ. Federico Santa Maria, Valparaiso (Chile). Dept. of Physics
  2. Ben-Gurion Univ. of the Negev, Beer Sheva (Israel). Dept. of Physics
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF); Israeli Science Foundation (ISF); European Union (EU)
OSTI Identifier:
1425162
Report Number(s):
RBRC-1242; BNL-114870-2017-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; TRN: US1802055
Grant/Contract Number:  
SC0012704; 1614640; PAI 80160015; 1635/16; 147/12; 2012124; 2014707; 318921
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 9; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Kovner, Alex, Lublinsky, Michael, and Skokov, Vladimir. Initial state qqg correlations as a background for the chiral magnetic effect in collision of small systems. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.96.096003.
Kovner, Alex, Lublinsky, Michael, & Skokov, Vladimir. Initial state qqg correlations as a background for the chiral magnetic effect in collision of small systems. United States. doi:10.1103/PhysRevD.96.096003.
Kovner, Alex, Lublinsky, Michael, and Skokov, Vladimir. Mon . "Initial state qqg correlations as a background for the chiral magnetic effect in collision of small systems". United States. doi:10.1103/PhysRevD.96.096003. https://www.osti.gov/servlets/purl/1425162.
@article{osti_1425162,
title = {Initial state qqg correlations as a background for the chiral magnetic effect in collision of small systems},
author = {Kovner, Alex and Lublinsky, Michael and Skokov, Vladimir},
abstractNote = {Motivated by understanding the background to chiral magnetic effect in proton-nucleus collisions from first principles, we compute the three particle correlation in the projectile wave function. We extract the correlations between two quarks and one gluon in the framework of the color glass condensate. This is related to the same-charge correlation of the conventional observable for the chiral magnetic effect. We show that there are two different contributions to this correlation function. One contribution is rapidity-independent and as such can be identified with the pedestal; while the other displays rather strong rapidity dependence. The pedestal contribution and the rapidity-dependent contribution at large rapidity separation between the two quarks result in the negative same charge correlations, while at small rapidity separation the second contribution changes sign. We argue that the computed initial state correlations might be partially responsible for the experimentally observed signal in proton-nucleus collisions.},
doi = {10.1103/PhysRevD.96.096003},
journal = {Physical Review D},
issn = {2470-0010},
number = 9,
volume = 96,
place = {United States},
year = {2017},
month = {11}
}

Journal Article:
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Cited by: 2 works
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