Spin polarized photons from an axially charged plasma at weak coupling: Complete leading order

Mamo, Kiminad A.; Yee, Ho-Ung

doi:10.1103/PhysRevD.93.065053

Title: Spin polarized photons from an axially charged plasma at weak coupling: Complete leading order

Journal Article · Thu Mar 24 00:00:00 EDT 2016 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.93.065053· OSTI ID:1260153

Mamo, Kiminad A. ^[1]; Yee, Ho-Ung ^[2]

Univ. of Illinois, Chicago, IL (United States),. Dept. of Physics
Univ. of Illinois, Chicago, IL (United States),. Dept. of Physics; Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center

In the presence of (approximately conserved) axial charge in the QCD plasma at finite temperature, the emitted photons are spin aligned, which is a unique P- and CP-odd signature of axial charge in the photon emission observables. We compute this “P-odd photon emission rate” in a weak coupling regime at a high temperature limit to complete leading order in the QCD coupling constant: the leading log as well as the constant under the log. As in the P-even total emission rate in the literature, the computation of the P-odd emission rate at leading order consists of three parts: (1) Compton and pair annihilation processes with hard momentum exchange, (2) soft t- and u-channel contributions with hard thermal loop resummation, (3) Landau-Pomeranchuk-Migdal resummation of collinear bremsstrahlung and pair annihilation. In conclusion, we present analytical and numerical evaluations of these contributions to our P-odd photon emission rate observable.

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

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0012704

OSTI ID:: 1260153

Report Number(s):: BNL-112294-2016-JA; PRVDAQ; R&D Project: PO-3

Journal Information:: Physical Review D, Vol. 93, Issue 6; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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Cited By (3)

Quantum kinetic theory of spin polarization of massive quarks in perturbative QCD: Leading log Li, Shiyong; Yee, Ho-Ung Physical Review D, Vol. 100, Issue 5 https://doi.org/10.1103/physrevd.100.056022	journal	September 2019
Photon radiation in hot nuclear matter by means of chiral anomalies Tuchin, Kirill arXiv https://doi.org/10.48550/arxiv.1903.02629	text	January 2019
Quantum Kinetic Theory of Spin Polarization of Massive Quarks in Perturbative QCD: Leading Log Li, Shiyong; Yee, Ho-Ung arXiv https://doi.org/10.48550/arxiv.1905.10463	text	January 2019

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