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Nonperturbative transverse-momentum-dependent effects in dihadron and direct photon-hadron angular correlations in p+p collisions at √s=200??GeV
http://hdl.handle.net/2241/00157749
http://hdl.handle.net/2241/0015774945fe25b8-7a2d-45fd-8413-c82b73f1b18f
名前 / ファイル | ライセンス | アクション |
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PRD_98-7-072004 (1.0 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2019-09-27 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Nonperturbative transverse-momentum-dependent effects in dihadron and direct photon-hadron angular correlations in p+p collisions at √s=200??GeV | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
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 | |||||
著者 |
江角, 晋一
× 江角, 晋一× 新井田, 貴文× 小沢, 恭一郎× PHENI Collaboration |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Dihadron and isolated direct photon-hadron angular correlations are measured in p+p collisions at √s=200??GeV. The correlations are sensitive to nonperturbative initial-state and final-state transverse momenta kT and jT in the azimuthal nearly back-to-back region Δ??π. To have sensitivity to small transverse momentum scales, nonperturbative momentum widths of pout, the out-of-plane transverse-momentum component perpendicular to the trigger particle, are measured. In this region, the evolution of pout can be studied when several different hard scales are measured. These widths are used to investigate possible effects from transverse-momentum-dependent factorization breaking. When accounting for the longitudinal-momentum fraction of the away-side hadron with respect to the near-side trigger particle, the widths are found to increase with the hard scale; this is qualitatively similar to the observed behavior in Drell-Yan and semi-inclusive deep-inelastic scattering interactions, where factorization is predicted to hold. The momentum widths are also studied as a function of center-of-mass energy by comparing to previous measurements at √s=510??GeV. The nonperturbative jet widths also appear to increase with √s at a similar xT, which is qualitatively consistent to similar measurements in Drell-Yan interactions. Future detailed global comparisons between measurements of processes where transverse-momentum-dependent factorization is predicted to hold and be broken will provide further insight into the role of color in hadronic interactions. | |||||
言語 | en | |||||
書誌情報 |
en : Physical review D 巻 98, 号 7, p. 072004, 発行日 2018-10 |
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ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 2470-0010 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00773624 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevD.98.072004 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | Published by the American Physical Society under the terms oftheCreative Commons Attribution 4.0 Internationallicense.Further distribution of this work must maintain attribution tothe author(s) and the published article’s title, journal citation,and DOI. Funded by SCOAP3. | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Physical Society |