skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Disentangling flow and signals of Chiral Magnetic Effect in U+U, Au+Au and p+Au collisions

Authors:
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1425558
Report Number(s):
BNL-114841-2017-COPA
Journal ID: ISSN 0375-9474
DOE Contract Number:
SC0012704
Resource Type:
Conference
Resource Relation:
Journal Volume: 967; Conference: The 26th International Conference on Ultra-relativistic Nucleus-Nucleus Collisions: Quark Matter 2017 (Quark Matter 2017), Chicago, IL, 2/5/2017 - 2/11/2017
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Tribedy, Prithwish. Disentangling flow and signals of Chiral Magnetic Effect in U+U, Au+Au and p+Au collisions. United States: N. p., 2017. Web. doi:10.1016/j.nuclphysa.2017.05.078.
Tribedy, Prithwish. Disentangling flow and signals of Chiral Magnetic Effect in U+U, Au+Au and p+Au collisions. United States. doi:10.1016/j.nuclphysa.2017.05.078.
Tribedy, Prithwish. Sun . "Disentangling flow and signals of Chiral Magnetic Effect in U+U, Au+Au and p+Au collisions". United States. doi:10.1016/j.nuclphysa.2017.05.078.
@article{osti_1425558,
title = {Disentangling flow and signals of Chiral Magnetic Effect in U+U, Au+Au and p+Au collisions},
author = {Tribedy, Prithwish},
abstractNote = {},
doi = {10.1016/j.nuclphysa.2017.05.078},
journal = {},
number = ,
volume = 967,
place = {United States},
year = {Sun Feb 05 00:00:00 EST 2017},
month = {Sun Feb 05 00:00:00 EST 2017}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • The Chiral Magnetic Effect (CME) is predicted for Au-Au collisions at RHIC. However, many backgrounds can give signals that make the measurement hard to interpret. The STAR experiment has made measurements at different collisions energy ranging from √(s NN)=7.7 GeV to 62.4 GeV. In the analysis that is presented we show that the CME turns on with energy and is not present in central collisions where the induced magnetic is small.
  • A quark interaction with topologically nontrivial gluonic fields, instantons and sphalerons, violates P and CP symmetry. In the strong magnetic field of a noncentral nuclear collision such interactions lead to the charge separation along the magnetic field, the so-called chiral magnetic effect (CME). Recent results from the STAR collaboration on charge dependent correlations are consistent with theoretical expectations for CME but may have contributions from other effects, which prevents definitive interpretation of the data. Here I propose to use central body-body U+U collisions to disentangle correlations due to CME from possible background correlations due to elliptic flow. Further, more quantitativemore » studies can be performed with collision of isobaric beams.« less
  • Charge-dependent azimuthal particle correlations with respect to the second-order event plane in p-Pb and PbPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV have been studied with the CMS experiment at the LHC. We performed the measurement with a three-particle correlation technique, using two particles with the same or opposite charge within the pseudorapidity range |η|<2.4, and a third particle measured in the hadron forward calorimeters (4.4<|η|<5). We also observed differences between the same and opposite sign correlations, as functions of multiplicity and η gap between the two charged particles, and found that they were of similar magnitude in p-Pbmore » and PbPb collisions at the same multiplicities. Our results pose a challenge for the interpretation of charge-dependent azimuthal correlations in heavy ion collisions in terms of the chiral magnetic effect.« less
  • Charge-dependent azimuthal particle correlations with respect to the second-order event plane in p-Pb and PbPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV have been studied with the CMS experiment at the LHC. We performed the measurement with a three-particle correlation technique, using two particles with the same or opposite charge within the pseudorapidity range |η|<2.4, and a third particle measured in the hadron forward calorimeters (4.4<|η|<5). We also observed differences between the same and opposite sign correlations, as functions of multiplicity and η gap between the two charged particles, and found that they were of similar magnitude in p-Pbmore » and PbPb collisions at the same multiplicities. Our results pose a challenge for the interpretation of charge-dependent azimuthal correlations in heavy ion collisions in terms of the chiral magnetic effect.« less
  • Cited by 3