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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/2237/26967fdf085b3-7cc1-47d8-b27c-23fce9f28607
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
PhysRevC_95_065204.pdf (227.9 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 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× Harada, Masayasu× Matsuzaki, Shinya× 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 | ||||||
| 内容記述タイプ | Abstract | |||||
| 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 | |||||
| 出版者 | ||||||
| 出版者 | American Physical Society | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | 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 |
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| 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 | |||||
