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Title: Experimental results on chiral magnetic and vortical effects

Abstract

Various novel transport phenomena in chiral systems result from the interplay of quantum anomalies with magnetic field and vorticity in high-energy heavy-ion collisions and could survive the expansion of the fireball and be detected in experiments. Among them are the chiral magnetic effect, the chiral vortical effect, and the chiral magnetic wave, the experimental searches for which have aroused extensive interest. As a result, the goal of this review is to describe the current status of experimental studies at Relativistic Heavy-Ion Collider at BNL and the Large Hadron Collider at CERN and to outline the future work in experiment needed to eliminate the existing uncertainties in the interpretation of the data.

Authors:
ORCiD logo [1];  [1]
  1. Univ. of California, Los Angeles, CA (United States)
Publication Date:
Research Org.:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1346031
Grant/Contract Number:
FG02-88ER40424
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Advances in High Energy Physics
Additional Journal Information:
Journal Volume: 2017; Journal ID: ISSN 1687-7357
Publisher:
Hindawi
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Wang, Gang, and Wen, Liwen. Experimental results on chiral magnetic and vortical effects. United States: N. p., 2017. Web. doi:10.1155/2017/9240170.
Wang, Gang, & Wen, Liwen. Experimental results on chiral magnetic and vortical effects. United States. doi:10.1155/2017/9240170.
Wang, Gang, and Wen, Liwen. Thu . "Experimental results on chiral magnetic and vortical effects". United States. doi:10.1155/2017/9240170. https://www.osti.gov/servlets/purl/1346031.
@article{osti_1346031,
title = {Experimental results on chiral magnetic and vortical effects},
author = {Wang, Gang and Wen, Liwen},
abstractNote = {Various novel transport phenomena in chiral systems result from the interplay of quantum anomalies with magnetic field and vorticity in high-energy heavy-ion collisions and could survive the expansion of the fireball and be detected in experiments. Among them are the chiral magnetic effect, the chiral vortical effect, and the chiral magnetic wave, the experimental searches for which have aroused extensive interest. As a result, the goal of this review is to describe the current status of experimental studies at Relativistic Heavy-Ion Collider at BNL and the Large Hadron Collider at CERN and to outline the future work in experiment needed to eliminate the existing uncertainties in the interpretation of the data.},
doi = {10.1155/2017/9240170},
journal = {Advances in High Energy Physics},
number = ,
volume = 2017,
place = {United States},
year = {Thu Jan 12 00:00:00 EST 2017},
month = {Thu Jan 12 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
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  • We devise a test of the chiral magnetic and chiral vortical effects (CME and CVE) in relativistic heavy ion collisions that relies only on the general properties of triangle anomalies. We show that the ratio R{sub EB}=J{sub E}/J{sub B} of charge J{sub E} and baryon J{sub B} currents for CME is R{sub EB}{sup CME}{yields}{infinity} for three light flavors of quarks (N{sub f}=3), and R{sub EB}{sup CME}=5 for N{sub f}=2, whereas for CVE it is R{sub EB}{sup CVE}=0 for N{sub f}=3 and R{sub EB}{sup CME}=1/2 for N{sub f}=2. The physical world with light u,d quarks and a heavier s quark ismore » in between the N{sub f}=2 and N{sub f}=3 cases; therefore, the ratios R{sub EB} for CME and CVE should differ by over an order of magnitude providing a possibility to separate clearly the CME and CVE contributions. In both cases, there has to be a positive correlation between the charge and baryon number asymmetries that can be tested on the event-by-event basis.« less
  • Cited by 107
  • Here, the interplay of quantum anomalies with magnetic field and vorticity results in a variety of novel non-dissipative transport phenomena in systems with chiral fermions, including the quark–gluon plasma. Among them is the Chiral Magnetic Effect (CME)—the generation of electric current along an external magnetic field induced by chirality imbalance. Because the chirality imbalance is related to the global topology of gauge fields, the CME current is topologically protected and hence non-dissipative even in the presence of strong interactions. As a result, the CME and related quantum phenomena affect the hydrodynamical and transport behavior of strongly coupled quark–gluon plasma, andmore » can be studied in relativistic heavy ion collisions where strong magnetic fields are created by the colliding ions. Evidence for the CME and related phenomena has been reported by the STAR Collaboration at Relativistic Heavy Ion Collider at BNL, and by the ALICE Collaboration at the Large Hadron Collider at CERN. The goal of the present review is to provide an elementary introduction into the physics of anomalous chiral effects, to describe the current status of experimental studies in heavy ion physics, and to outline the future work, both in experiment and theory, needed to eliminate the existing uncertainties in the interpretation of the data.« less
  • Cited by 118