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Title: Towards Measurements of Chiral Effects Using Identified Particles from STAR

Abstract

We report recent STAR results on searching for the Chiral Magnetic Effect via measurements of γ correlation and K K parameter for charged hadrons and identified particle pairs (ππ, pK, πK, pp, pπ) in Au+Au collisions at 200 GeV. We compare the K K parameters with expectations from the AMPT simulations. Sizable γ correlations for charged hadrons, using Time Projection Chamber event plane, in p+Au and d+Au 200 GeV have been observed, and the correlations in these small systems are reduced to near zero when the event planes from forward detectors are used. We will also present our results on the Chiral Magnetic Wave searches from p+Au collisions at 200 GeV.

Authors:
 [1]
  1. Univ. of California, Los Angeles, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Contributing Org.:
[STAR Collaboration]
OSTI Identifier:
1485064
Grant/Contract Number:  
[AC02-05CH11231; FG02-88ER40424]
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Physics. A
Additional Journal Information:
[ Journal Volume: 967; Journal Issue: C]; Journal ID: ISSN 0375-9474
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Chiral Magnetic Effect; Chiral Magnetic Wave; γ correlation; parameter

Citation Formats

Wen, Liwen. Towards Measurements of Chiral Effects Using Identified Particles from STAR. United States: N. p., 2017. Web. doi:10.1016/j.nuclphysa.2017.07.003.
Wen, Liwen. Towards Measurements of Chiral Effects Using Identified Particles from STAR. United States. doi:10.1016/j.nuclphysa.2017.07.003.
Wen, Liwen. Mon . "Towards Measurements of Chiral Effects Using Identified Particles from STAR". United States. doi:10.1016/j.nuclphysa.2017.07.003. https://www.osti.gov/servlets/purl/1485064.
@article{osti_1485064,
title = {Towards Measurements of Chiral Effects Using Identified Particles from STAR},
author = {Wen, Liwen},
abstractNote = {We report recent STAR results on searching for the Chiral Magnetic Effect via measurements of γ correlation and KK parameter for charged hadrons and identified particle pairs (ππ, pK, πK, pp, pπ) in Au+Au collisions at 200 GeV. We compare the KK parameters with expectations from the AMPT simulations. Sizable γ correlations for charged hadrons, using Time Projection Chamber event plane, in p+Au and d+Au 200 GeV have been observed, and the correlations in these small systems are reduced to near zero when the event planes from forward detectors are used. We will also present our results on the Chiral Magnetic Wave searches from p+Au collisions at 200 GeV.},
doi = {10.1016/j.nuclphysa.2017.07.003},
journal = {Nuclear Physics. A},
number = [C],
volume = [967],
place = {United States},
year = {2017},
month = {9}
}

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Figures / Tables:

Fig. 1 Fig. 1: (Color online) (a) γOS − γSS for h±h± in Au+Au collisions at 7.7, 19.6, 39, 200 GeV, and AMPT Au+Au 200 GeV simulations. (b) γOS−SS and (c) κK for ππ, pK, πK, pp, and as a function of centrality in Au+Au collisions at 200 GeV.

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