Pair invariant mass to isolate background in the search for the chiral magnetic effect in <math><mi>Au</mi><mo> </mo><mo>+</mo><mo> </mo><mi>Au</mi></math> collisions at <math><mrow><msqrt><msub><mi>s</mi><msub><mrow/><mi>NN</mi></msub></msub></msqrt><mo>=</mo><mn>200</mn><mo> </mo><mi>GeV</mi></mrow></math> - INSPIRE

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Pair invariant mass to isolate background in the search for the chiral magnetic effect in $Au + Au$ collisions at $\sqrt{s_{_{NN}}} = 200 GeV$

STAR

Collaboration

Jun 8, 2020

10 pages

Published in:

Phys.Rev.C 106 (2022) 3, 034908

Published: Sep 16, 2022

e-Print:

2006.05035 [nucl-ex]

DOI:

10.1103/PhysRevC.106.034908 (publication)

Experiments:

BNL-RHIC-STAR

View in:

reference search28 citations

Citations per year

Abstract: (APS)

Quark interactions with topological gluon configurations can induce local chirality imbalance and parity violation in quantum chromodynamics, which can lead to the chiral magnetic effect (CME)—an electric charge separation along the strong magnetic field in relativistic heavy-ion collisions. The CME-sensitive azimuthal correlator observable

(Δ γ)

is contaminated by background arising, in part, from resonance decays coupled with elliptic anisotropy

(v_{2})

. We report here differential measurements of the correlator as a function of the pair invariant mass

(m_{inv})

in 20–50% centrality

Au + Au

collisions at

\sqrt{s_{_{NN}}} = 200

GeV by the STAR experiment at the BNL Relativistic Heavy Ion Collider. Strong resonance background contributions to

Δ γ

are observed. At large

m_{inv}

where this background is significantly reduced, the

Δ γ

value is found to be significantly smaller. An event-shape-engineering technique is deployed to determine the

v_{2}

background shape as a function of

m_{inv}

. We extract a

v_{2}

-independent and

m_{inv}

-averaged signal

Δ γ_{sig} = (0.03 \pm 0.06 \pm 0.08) \times 10^{- 4}

, or

(2 \pm 4 \pm 5) %

of the inclusive

Δ γ (m_{inv} > 0.4

GeV / c^{2}) = (1.58 \pm 0.02 \pm 0.02) \times 10^{- 4}

, within pion

p_{T} = 0.2

–0.8

GeV / c

and averaged over pseudorapidity ranges of

- 1 < η < - 0.05

and

0.05 < η < 1

. This represents an upper limit of

0.23 \times 10^{- 4}

, or

15 %

of the inclusive result, at

95 %

confidence level for the

m_{inv}

-integrated CME contribution.

Note:

PRC published version

effect: magnetic
magnetic field: chiral
quark gluon: interaction
parity: violation
resonance: decay
charge: electric
heavy ion: scattering
magnetic field: high
background
correlation function

References(58)

Figures(7)

[1]

Vacuum Stability and Vacuum Excitation in a Spin 0 Field Theory

T.D. Lee
(
- Columbia U.
)
,
G.C. Wick
(
- Columbia U.
)

- Phys.Rev.D 9 (1974) 2291-2316
•
DOI:
- 10.1103/PhysRevD.9.2291

[2]

Possibility of spontaneous parity violation in hot QCD

Dmitri Kharzeev
(
- RIKEN BNL
)
,
R.D. Pisarski
(
- Brookhaven
)
,
Michel H.G. Tytgat
(
- Brookhaven and
- Brussels U.
)

- Phys.Rev.Lett. 81 (1998) 512-515
•
e-Print:
- hep-ph/9804221
•
DOI:
- 10.1103/PhysRevLett.81.512

[3]

Pionic measures of parity and CP violation in high-energy nuclear collisions

Dmitri Kharzeev
(
- RIKEN BNL
)
,
Robert D. Pisarski
(
- Brookhaven
)

- Phys.Rev.D 61 (2000) 111901
•
e-Print:
- hep-ph/9906401
•
DOI:
- 10.1103/PhysRevD.61.111901

[4]

The Chiral Magnetic Effect

Kenji Fukushima
(
- Kyoto U., Yukawa Inst., Kyoto
)
,
Dmitri E. Kharzeev
(
- Brookhaven
)
,
Harmen J. Warringa
(
- Brookhaven
)

- Phys.Rev.D 78 (2008) 074033
•
e-Print:
- 0808.3382
•
DOI:
- 10.1103/PhysRevD.78.074033

[5]

Charge Fluctuations from the Chiral Magnetic Effect in Nuclear Collisions

Berndt Muller
(
- Duke U.
)
,
Andreas Schafer
(
- Regensburg U.
)

- Phys.Rev.C 82 (2010) 057902
•
e-Print:
- 1009.1053
•
DOI:
- 10.1103/PhysRevC.82.057902

[6]

The Effects of topological charge change in heavy ion collisions: 'Event by event P and CP violation'

Dmitri E. Kharzeev
(
- Brookhaven
)
,
Larry D. McLerran
(
- Brookhaven and
- RIKEN BNL
)
,
Harmen J. Warringa
(
- Brookhaven
)

- Nucl.Phys.A 803 (2008) 227-253
•
e-Print:
- 0711.0950
•
DOI:
- 10.1016/j.nuclphysa.2008.02.298

[7]

Electric Charge Separation in Strong Transient Magnetic Fields

- Phys.Rev.C 81 (2010) 064912
•
e-Print:
- 1003.2436
•
DOI:
- 10.1103/PhysRevC.81.064912

[8]

Chiral Magnetic conductivity

Dmitri E. Kharzeev
(
- Brookhaven
)
,
Harmen J. Warringa
(
- Frankfurt U.
)

- Phys.Rev.D 80 (2009) 034028
•
e-Print:
- 0907.5007
•
DOI:
- 10.1103/PhysRevD.80.034028

[9]

Time and space dependence of the electromagnetic field in relativistic heavy-ion collisions

Kirill Tuchin
(
- Iowa State U.
)

- Phys.Rev.C 88 (2013) 2, 024911
•
e-Print:
- 1305.5806
•
DOI:
- 10.1103/PhysRevC.88.024911

[10]

Parity violation in hot QCD: Why it can happen, and how to look for it

Dmitri Kharzeev
(
- Brookhaven
)

- Phys.Lett.B 633 (2006) 260-264
•
e-Print:
- hep-ph/0406125
•
DOI:
- 10.1016/j.physletb.2005.11.075

[11]

Anomalous Chiral Transport in Heavy Ion Collisions from Anomalous-Viscous Fluid Dynamics

Shuzhe Shi
(
- Indiana U. and
- Indiana U., CEEM
)
,
Yin Jiang
(
- Beihang U. and
- U. Heidelberg, ITP
)
,
Elias Lilleskov
(
- Indiana U. and
- Indiana U., CEEM and
- Macalester Coll.
)
,
Jinfeng Liao
(
- Indiana U. and
- Indiana U., CEEM and
- CCNU, Wuhan, Inst. Part. Phys. and
- Hua-Zhong Normal U., LQLP
)

- Annals Phys. 394 (2018) 50-72
•
e-Print:
- 1711.02496
•
DOI:
- 10.1016/j.aop.2018.04.026

[12]

Chiral magnetic and vortical effects in high-energy nuclear collisions—A status report

D.E. Kharzeev
(
- Brookhaven and
- SUNY, Stony Brook and
- RIKEN BNL
)
,
J. Liao
(
- Indiana U. and
- Indiana U., CEEM and
- RIKEN BNL
)
,
S.A. Voloshin
(
- Wayne State U.
)
,
G. Wang
(
- UCLA
)

- Prog.Part.Nucl.Phys. 88 (2016) 1-28
•
e-Print:
- 1511.04050
•
DOI:
- 10.1016/j.ppnp.2016.01.001

[13]

Search for the Chiral Magnetic Effect in Relativistic Heavy-Ion Collisions

Jie Zhao
(
- Purdue U.
)

- Int.J.Mod.Phys.A 33 (2018) 13, 1830010
•
e-Print:
- 1805.02814
•
DOI:
- 10.1142/S0217751X18300107

[14]

Status of the Chiral Magnetic Effect Search in Relativistic Heavy-ion Collisions

ZHAO. Jie
(
- Huzhou U. and
- Purdue U.
)
,
TU. Zhoudunming
(
- Rice U.
)
,
WANG. Fuqiang
(
- Huzhou U. and
- Purdue U.
)

- Nucl.Phys.Rev. 35 (2018) 3, 225-242
•
e-Print:
- 1807.05083
•
DOI:
- 10.11804/NuclPhysRev.35.03.225

[15]

Experimental searches for the chiral magnetic effect in heavy-ion collisions

Jie Zhao
(
- Purdue U.
)
,
Fuqiang Wang
(
- Purdue U. and
- Huzhou U.
)

- Prog.Part.Nucl.Phys. 107 (2019) 200-236
•
e-Print:
- 1906.11413
•
DOI:
- 10.1016/j.ppnp.2019.05.001

[16]

Chiral Magnetic Effects in Nuclear Collisions

Wei Li
(
- Rice U.
)
,
Gang Wang
(
- UCLA
)

- Ann.Rev.Nucl.Part.Sci. 70 (2020) 293-321
•
e-Print:
- 2002.10397
•
DOI:
- 10.1146/annurev-nucl-030220-065203

[17]

Constraints on the chiral magnetic effect using charge-dependent azimuthal correlations in $p\mathrm{Pb}$ and PbPb collisions at the CERN Large Hadron Collider

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.C 97 (2018) 4, 044912
•
e-Print:
- 1708.01602
•
DOI:
- 10.1103/PhysRevC.97.044912

[18]

Constraining the magnitude of the Chiral Magnetic Effect with Event Shape Engineering in Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 2.76 TeV

ALICE

Collaboration

•

Shreyasi Acharya
(
- Calcutta, VECC
)

et al.

- Phys.Lett.B 777 (2018) 151-162
•
e-Print:
- 1709.04723
•
DOI:
- 10.1016/j.physletb.2017.12.021

[19]

Varying the chiral magnetic effect relative to flow in a single nucleus-nucleus collision

Hao-jie Xu
(
- Huzhou U.
)
,
Jie Zhao
(
- Purdue U.
)
,
Xiaobao Wang
(
- Huzhou U.
)
,
Hanlin Li
(
- Hua-Zhong U. Sci. Tech.
)
,
Zi-Wei Lin
(
- CCNU, Wuhan, Inst. Part. Phys. and
- East Carolina U.
)

et al.

- Chin.Phys.C 42 (2018) 8, 084103
•
e-Print:
- 1710.07265
•
DOI:
- 10.1088/1674-1137/42/8/084103

[20]

Probe chiral magnetic effect with signed balance function

A.H. Tang
(
- Brookhaven
)

- Chin.Phys.C 44 (2020) 5, 054101
•
e-Print:
- 1903.04622
•
DOI:
- 10.1088/1674-1137/44/5/054101

[21]

Status of the chiral magnetic effect and collisions of isobars

Volker Koch
(
- LBNL, NSD
)
,
Soeren Schlichting
(
- Brookhaven Natl. Lab.
)
,
Vladimir Skokov
(
- RIKEN BNL
)
,
Paul Sorensen
(
- Brookhaven Natl. Lab.
)
,
Jim Thomas
(
- LBNL, NSD
)

et al.

- Chin.Phys.C 41 (2017) 7, 072001
•
e-Print:
- 1608.00982
•
DOI:
- 10.1088/1674-1137/41/7/072001

[22]

Search for the chiral magnetic effect with isobar collisions at $\sqrt {s_{NN}}$ =200 GeV by the STAR Collaboration at the BNL Relativistic Heavy Ion Collider

STAR

Collaboration

•

Mohamed Abdallah
(
- American U., Cairo
)

et al.

- Phys.Rev.C 105 (2022) 1, 014901
•
e-Print:
- 2109.00131
•
DOI:
- 10.1103/PhysRevC.105.014901

[23]

System size, energy, pseudorapidity, and centrality dependence of elliptic flow

PHOBOS

Collaboration

•

B. Alver
(
- MIT
)

et al.

- Phys.Rev.Lett. 98 (2007) 242302
•
e-Print:
- nucl-ex/0610037
•
DOI:
- 10.1103/PhysRevLett.98.242302

[24]

Parity violation in hot QCD: How to detect it

Sergei A. Voloshin
(
- Wayne State U.
)

- Phys.Rev.C 70 (2004) 057901
•
e-Print:
- hep-ph/0406311
•
DOI:
- 10.1103/PhysRevC.70.057901

[25]

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

STAR

Collaboration

•

B.I. Abelev
(
- Illinois U., Chicago
)

et al.

- Phys.Rev.C 81 (2010) 054908
•
e-Print:
- 0909.1717
•
DOI:
- 10.1103/PhysRevC.81.054908

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