Hydrodynamics with chiral anomaly and charge separation in relativistic heavy ion collisions

Yin, Yi; Liao, Jinfeng

doi:10.1016/j.physletb.2016.02.065

Title: Hydrodynamics with chiral anomaly and charge separation in relativistic heavy ion collisions

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Abstract

Matter with chiral fermions is microscopically described by theory with quantum anomaly and macroscopically described (at low energy) by anomalous hydrodynamics. For such systems in the presence of external magnetic field and chirality imbalance, a charge current is generated along the magnetic field direction ₋ a phenomenon known as the Chiral Magnetic Effect (CME). The quark- gluon plasma created in relativistic heavy ion collisions provides an (approximate) example, for which the CME predicts a charge separation perpendicular to the collisional reaction plane. Charge correlation measurements designed for the search of such signal have been done at RHIC and the LHC for which the interpretations, however, remain unclear due to contamination by background effects that are collective flow driven, theoretically poorly constrained, and experimentally hard to separate. Using anomalous (and viscous) hydrodynamic simulations, we make a first attempt at quantifying contributions to observed charge correlations from both CME and background effects in one and same framework. We discuss the implications for the search of CME.

Authors:

; Liao, Jinfeng

Publication Date:: 2016-05-01

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1240207

Alternate Identifier(s):: OSTI ID: 1260152

Report Number(s):: BNL-108043-2016-JA
Journal ID: ISSN 0370-2693; S0370269316001611; PII: S0370269316001611

Grant/Contract Number:: AC02-98CH10886; SC0012704; PHY-1352368

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 756 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Chiral Magnetic Effect (CME); Heavy Ion Collision

Citation Formats


                    Yin, Yi, and Liao, Jinfeng. Hydrodynamics with chiral anomaly and charge separation in relativistic heavy ion collisions.  Netherlands: N. p., 2016. 
Web.  doi:10.1016/j.physletb.2016.02.065.

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                    Yin, Yi, & Liao, Jinfeng. Hydrodynamics with chiral anomaly and charge separation in relativistic heavy ion collisions.  Netherlands.  https://doi.org/10.1016/j.physletb.2016.02.065

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                    Yin, Yi, and Liao, Jinfeng. Sun .  
"Hydrodynamics with chiral anomaly and charge separation in relativistic heavy ion collisions".  Netherlands.  https://doi.org/10.1016/j.physletb.2016.02.065.

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@article{osti_1240207,

  title        = {Hydrodynamics with chiral anomaly and charge separation in relativistic heavy ion collisions},

  author       = {Yin, Yi and Liao, Jinfeng},

  abstractNote = {Matter with chiral fermions is microscopically described by theory with quantum anomaly and macroscopically described (at low energy) by anomalous hydrodynamics. For such systems in the presence of external magnetic field and chirality imbalance, a charge current is generated along the magnetic field direction ₋ a phenomenon known as the Chiral Magnetic Effect (CME). The quark- gluon plasma created in relativistic heavy ion collisions provides an (approximate) example, for which the CME predicts a charge separation perpendicular to the collisional reaction plane. Charge correlation measurements designed for the search of such signal have been done at RHIC and the LHC for which the interpretations, however, remain unclear due to contamination by background effects that are collective flow driven, theoretically poorly constrained, and experimentally hard to separate. Using anomalous (and viscous) hydrodynamic simulations, we make a first attempt at quantifying contributions to observed charge correlations from both CME and background effects in one and same framework. We discuss the implications for the search of CME.},

  doi          = {10.1016/j.physletb.2016.02.065},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 756,

  place        = {Netherlands},

  year         = {2016},

  month        = {5}

}

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