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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

Charged pions tagged with polarized photons probing strong CP violation in a chiral-imbalance medium

http://hdl.handle.net/2237/26967
http://hdl.handle.net/2237/26967
fdf085b3-7cc1-47d8-b27c-23fce9f28607
名前 / ファイル ライセンス アクション
PhysRevC_95_065204.pdf PhysRevC_95_065204.pdf (227.9 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-09-06
タイトル
タイトル Charged pions tagged with polarized photons probing strong CP violation in a chiral-imbalance medium
言語 en
著者 Kawaguchi, Mamiya

× Kawaguchi, Mamiya

WEKO 73497

en Kawaguchi, Mamiya

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Harada, Masayasu

× Harada, Masayasu

WEKO 73498

en Harada, Masayasu

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Matsuzaki, Shinya

× Matsuzaki, Shinya

WEKO 73499

en Matsuzaki, Shinya

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Ouyang, Ruiwen

× Ouyang, Ruiwen

WEKO 73500

en Ouyang, Ruiwen

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 © 2017 American Physical Society
抄録
内容記述 It is expected that in a hot QCD system, a local parity-odd domain can be produced due to nonzero chirality, which is induced from the difference of winding numbers carried by the gluon topological configuration (QCD sphaleron). This local domain is called the chiral-imbalance medium, characterized by nonzero chiral chemical potential, which can be interpreted as the time variation of the strong CP phase. We find that the chiral chemical potential generates the parity breaking term in the electromagnetic form factor of charged pions. Heavy ion collision experiments could observe the phenomenological consequence of this parity-odd form factor through the elastic scattering of a pion and a photon in the medium. Then we quantify the asymmetry rate of the parity violation by measuring the polarization of the photon associated with the pion, and discuss how it could be measured in a definite laboratory frame. We roughly estimate the typical size of the asymmetry, just by picking up the pion resonant process, and find that the signal can be sufficiently larger than possible background events from parity-breaking electroweak process. Our findings might provide a novel possibility to make a manifest detection for the remnant of the strong CP violation.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 American Physical Society
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1103/PhysRevC.95.065204
ISSN
収録物識別子タイプ PISSN
収録物識別子 2469-9985
書誌情報 en : Physical Review C

巻 95, 号 6, p. 065204-065204, 発行日 2017-06
著者版フラグ
値 publisher
URI
識別子 https://doi.org/10.1103/PhysRevC.95.065204
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/26967
識別子タイプ HDL
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