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Title: Probe Chiral Magnetic Effect with Signed Balance Function

Abstract

In this paper a pair of observables are proposed as alternative ways, by examining the fluctuation of net momentum-ordering of charged pairs, to study the charge separation induced by the Chiral Magnetic Effect (CME) in relativistic heavy ion collisions. They are, the out-of-plane to in-plane ratio of fluctuation of the difference between signed balance functions measured in pair’s rest frame, and the ratio of it to similar measurement made in the laboratory frame. In this work, both observables have been studied with simulations including flow-related backgrounds, and for the first time, backgrounds that are related to resonance's global spin alignment. The two observables have similar positive responses to signal, and opposite, limited responses to identifiable backgrounds arising from resonance flow and spin alignment. Both observables have also been tested with two realistic models, namely, a multi-phase transport (AMPT) model and the anomalous-viscous fluid dynamics (AVFD) model. These two observables, when cross examined, will provide useful insights in the study of CME-induced charge separation.

Authors:
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1604325
Report Number(s):
BNL-213712-2020-JAAM
Journal ID: ISSN 1674-1137
Grant/Contract Number:  
SC0012704; AC02-98CH10886; FG02-89ER40531
Resource Type:
Accepted Manuscript
Journal Name:
Chinese Physics. C, High Energy Physics and Nuclear Physics
Additional Journal Information:
Journal Volume: 44; Journal Issue: 5; Journal ID: ISSN 1674-1137
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; chiral magnetic effect; balance function; signed balance function; heavy ion collisions; momentum ordering

Citation Formats

Tang, Aihong. Probe Chiral Magnetic Effect with Signed Balance Function. United States: N. p., 2020. Web. https://doi.org/10.1088/1674-1137/44/5/054101.
Tang, Aihong. Probe Chiral Magnetic Effect with Signed Balance Function. United States. https://doi.org/10.1088/1674-1137/44/5/054101
Tang, Aihong. Wed . "Probe Chiral Magnetic Effect with Signed Balance Function". United States. https://doi.org/10.1088/1674-1137/44/5/054101. https://www.osti.gov/servlets/purl/1604325.
@article{osti_1604325,
title = {Probe Chiral Magnetic Effect with Signed Balance Function},
author = {Tang, Aihong},
abstractNote = {In this paper a pair of observables are proposed as alternative ways, by examining the fluctuation of net momentum-ordering of charged pairs, to study the charge separation induced by the Chiral Magnetic Effect (CME) in relativistic heavy ion collisions. They are, the out-of-plane to in-plane ratio of fluctuation of the difference between signed balance functions measured in pair’s rest frame, and the ratio of it to similar measurement made in the laboratory frame. In this work, both observables have been studied with simulations including flow-related backgrounds, and for the first time, backgrounds that are related to resonance's global spin alignment. The two observables have similar positive responses to signal, and opposite, limited responses to identifiable backgrounds arising from resonance flow and spin alignment. Both observables have also been tested with two realistic models, namely, a multi-phase transport (AMPT) model and the anomalous-viscous fluid dynamics (AVFD) model. These two observables, when cross examined, will provide useful insights in the study of CME-induced charge separation.},
doi = {10.1088/1674-1137/44/5/054101},
journal = {Chinese Physics. C, High Energy Physics and Nuclear Physics},
number = 5,
volume = 44,
place = {United States},
year = {2020},
month = {3}
}

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Works referenced in this record:

Possibility of Spontaneous Parity Violation in Hot QCD
journal, July 1998

  • Kharzeev, Dmitri; Pisarski, Robert D.; Tytgat, Michel H. G.
  • Physical Review Letters, Vol. 81, Issue 3
  • DOI: 10.1103/PhysRevLett.81.512

The effects of topological charge change in heavy ion collisions: “Event by event and violation”
journal, May 2008


Chiral magnetic and vortical effects in high-energy nuclear collisions—A status report
journal, May 2016


Novel quantum phenomena induced by strong magnetic fields in heavy-ion collisions
journal, January 2017


Methods for analyzing anisotropic flow in relativistic nuclear collisions
journal, September 1998


Parity violation in hot QCD: How to detect it
journal, November 2004


Measurement of charge multiplicity asymmetry correlations in high-energy nucleus-nucleus collisions at s N N = 200 GeV
journal, April 2014


New correlator to detect and characterize the chiral magnetic effect
journal, June 2018


A novel invariant mass method to isolate resonance backgrounds from the chiral magnetic effect
journal, February 2019


Varying the chiral magnetic effect relative to flow in a single nucleus-nucleus collision
journal, July 2018


Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation
journal, December 2009


Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy-ion collisions
journal, May 2010


Beam-Energy Dependence of Charge Separation along the Magnetic Field in Au + Au Collisions at RHIC
journal, July 2014


Charge separation relative to the reaction plane in Pb-Pb collisions at s N N = 2.76 TeV
journal, January 2013


Observation of Charge-Dependent Azimuthal Correlations in p Pb Collisions and Its Implication for the Search for the Chiral Magnetic Effect
journal, March 2017


Effects of momentum conservation and flow on angular correlations observed in experiments at the BNL Relativistic Heavy Ion Collider
journal, August 2011


Effects of cluster particle correlations on local parity violation observables
journal, June 2010


Challenges in flow background removal in search for the chiral magnetic effect
journal, May 2017


Responses of the chiral-magnetic-effect–sensitive sine observable to resonance backgrounds in heavy-ion collisions
journal, September 2018


Quantifying the chiral magnetic effect from anomalous-viscous fluid dynamics
journal, January 2018


Anomalous chiral transport in heavy ion collisions from Anomalous-Viscous Fluid Dynamics
journal, July 2018


Clocking Hadronization in Relativistic Heavy-Ion Collisions with Balance Functions
journal, September 2000


Narrowing of the Balance Function with Centrality in A u + A u Collisions at s N N = 130 G e V
journal, May 2003


Longitudinal scaling property of the charge balance function in <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi mathvariant="normal">Au</mml:mi><mml:mo>+</mml:mo><mml:mi mathvariant="normal">Au</mml:mi></mml:math> collisions at <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn><mml:mtext> GeV</mml:mtext></mml:math>
journal, June 2010


Balance functions from Au + Au , d + Au , and p + p collisions at s NN = 200 GeV
journal, August 2010


Beam-energy dependence of charge balance functions from Au + Au collisions at energies available at the BNL Relativistic Heavy Ion Collider
journal, August 2016


Charge correlations using the balance function in Pb–Pb collisions at <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msqrt><mml:msub><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>2.76</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math>
journal, June 2013


Effect of magnetic fields on pairs of oppositely charged particles in ultrarelativistic heavy-ion collisions
journal, April 2019


Systematic measurements of identified particle spectra in pp , d + Au , and Au + Au collisions at the STAR detector
journal, March 2009


ρ 0 Production and Possible Modification in A u + A u and p + p Collisions at s N N = 200 G e V
journal, March 2004


PYTHIA 6.4 physics and manual
journal, May 2006


Globally Polarized Quark-Gluon Plasma in Noncentral A + A Collisions
journal, March 2005


Spin alignment of vector mesons in non-central <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>A</mml:mi><mml:mo>+</mml:mo><mml:mi>A</mml:mi></mml:math> collisions
journal, November 2005


Global polarization of QGP in non-central heavy-ion collisions at high energies
journal, July 2007


Polarization probes of vorticity in heavy ion collisions
journal, October 2007


Global quark polarization in noncentral A + A collisions
journal, April 2008


Λ polarization in peripheral heavy ion collisions
journal, September 2013


ϕ Meson and K*0 Global Spin Alignment at STAR
journal, February 2019


Resonance decay effects on anisotropy parameters
journal, September 2004


hijing: A Monte Carlo model for multiple jet production in pp , pA , and AA collisions
journal, December 1991


Systematic study of particle production in p + p   ( p ¯ ) collisions via the HIJING model
journal, February 1992


ZPC 1.0.1: a parton cascade for ultrarelativistic heavy ion collisions
journal, April 1998


Formation of superdense hadronic matter in high energy heavy-ion collisions
journal, October 1995


Studies of Superdense Hadronic Matter in a Relativistic Transport Model
journal, August 2001

  • Li, Bao-An; Sustich, A. T.; Zhang, Bin
  • International Journal of Modern Physics E, Vol. 10, Issue 04n05
  • DOI: 10.1142/S0218301301000575

200 A GeV Au + Au Collisions Serve a Nearly Perfect Quark-Gluon Liquid
journal, May 2011


Relativistic hadron-hadron collisions in the ultra-relativistic quantum molecular dynamics model
journal, September 1999

  • Bleicher, M.; Zabrodin, E.; Spieles, C.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 25, Issue 9
  • DOI: 10.1088/0954-3899/25/9/308

Microscopic models for ultrarelativistic heavy ion collisions
journal, January 1998