Effect of quark spins to the hadron distributions for chiral magnetic wave in ultrarelativistic heavy-ion collisions

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Abstract

Topological fluctuation of the gluon field in quantum chromodynamics modifies the vacuum structure, and causes various chiral anomalies. In the strong magnetic field generated by semi-central heavy-ion collisions, the axial and vector density fluctuations propagate along the external magnetic field, called the chiral magnetic wave. Up to now the investigation of the various chiral anomalies in heavy ion collisions has been focussed on the charge distribution in the transverse plane. However, this paper points out that the information on the charge distribution is not enough and the spin effect should also be taken into account. Considering the charge and spin distributions together, π± with spin 0 are not proper particle species to study the chiral anomalies, as the signal may be significantly suppressed as one of the constituent (anti)quarks should come from background to form the pseudoscalar states. It is, therefore, necessary to analyze explicitly the vector mesons with spin 1 (K (892)) and baryons with spin 3/2 (Δ++(1232), Σ (1385) and Ω). If the chiral anomaly effects exist, the elliptic flow parameter is expected to be larger for negative particles for each particle species.

Original languageEnglish
Pages (from-to)77-81
Number of pages5
JournalJournal of the Korean Physical Society
Volume71
Issue number2
DOIs
Publication statusPublished - 2017 Jul 1

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ionic collisions
quarks
charge distribution
anomalies
vector mesons
magnetic fields
baryons
quantum chromodynamics
vacuum
causes

Keywords

  • Chirality
  • Magnetic field
  • Parity
  • Relativistic heavy ion collision
  • Spin

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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title = "Effect of quark spins to the hadron distributions for chiral magnetic wave in ultrarelativistic heavy-ion collisions",
abstract = "Topological fluctuation of the gluon field in quantum chromodynamics modifies the vacuum structure, and causes various chiral anomalies. In the strong magnetic field generated by semi-central heavy-ion collisions, the axial and vector density fluctuations propagate along the external magnetic field, called the chiral magnetic wave. Up to now the investigation of the various chiral anomalies in heavy ion collisions has been focussed on the charge distribution in the transverse plane. However, this paper points out that the information on the charge distribution is not enough and the spin effect should also be taken into account. Considering the charge and spin distributions together, π± with spin 0 are not proper particle species to study the chiral anomalies, as the signal may be significantly suppressed as one of the constituent (anti)quarks should come from background to form the pseudoscalar states. It is, therefore, necessary to analyze explicitly the vector mesons with spin 1 (K*± (892)) and baryons with spin 3/2 (Δ++(1232), Σ− (1385) and Ω−). If the chiral anomaly effects exist, the elliptic flow parameter is expected to be larger for negative particles for each particle species.",
keywords = "Chirality, Magnetic field, Parity, Relativistic heavy ion collision, Spin",
author = "Byungsik Hong",
year = "2017",
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doi = "10.3938/jkps.71.77",
language = "English",
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journal = "Journal of the Korean Physical Society",
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T1 - Effect of quark spins to the hadron distributions for chiral magnetic wave in ultrarelativistic heavy-ion collisions

AU - Hong, Byungsik

PY - 2017/7/1

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N2 - Topological fluctuation of the gluon field in quantum chromodynamics modifies the vacuum structure, and causes various chiral anomalies. In the strong magnetic field generated by semi-central heavy-ion collisions, the axial and vector density fluctuations propagate along the external magnetic field, called the chiral magnetic wave. Up to now the investigation of the various chiral anomalies in heavy ion collisions has been focussed on the charge distribution in the transverse plane. However, this paper points out that the information on the charge distribution is not enough and the spin effect should also be taken into account. Considering the charge and spin distributions together, π± with spin 0 are not proper particle species to study the chiral anomalies, as the signal may be significantly suppressed as one of the constituent (anti)quarks should come from background to form the pseudoscalar states. It is, therefore, necessary to analyze explicitly the vector mesons with spin 1 (K*± (892)) and baryons with spin 3/2 (Δ++(1232), Σ− (1385) and Ω−). If the chiral anomaly effects exist, the elliptic flow parameter is expected to be larger for negative particles for each particle species.

AB - Topological fluctuation of the gluon field in quantum chromodynamics modifies the vacuum structure, and causes various chiral anomalies. In the strong magnetic field generated by semi-central heavy-ion collisions, the axial and vector density fluctuations propagate along the external magnetic field, called the chiral magnetic wave. Up to now the investigation of the various chiral anomalies in heavy ion collisions has been focussed on the charge distribution in the transverse plane. However, this paper points out that the information on the charge distribution is not enough and the spin effect should also be taken into account. Considering the charge and spin distributions together, π± with spin 0 are not proper particle species to study the chiral anomalies, as the signal may be significantly suppressed as one of the constituent (anti)quarks should come from background to form the pseudoscalar states. It is, therefore, necessary to analyze explicitly the vector mesons with spin 1 (K*± (892)) and baryons with spin 3/2 (Δ++(1232), Σ− (1385) and Ω−). If the chiral anomaly effects exist, the elliptic flow parameter is expected to be larger for negative particles for each particle species.

KW - Chirality

KW - Magnetic field

KW - Parity

KW - Relativistic heavy ion collision

KW - Spin

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