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Measurement of the D+-meson production cross section at low transverse momentum in p ̄p collisions at √s=1.96??TeV
http://hdl.handle.net/2241/00146704
http://hdl.handle.net/2241/001467040603a3f5-bd8c-4786-9421-42dfcd880c88
名前 / ファイル | ライセンス | アクション |
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PRD_95-9-092006 (916.0 kB)
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Item type | Journal Article(1) | |||||
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公開日 | 2017-07-04 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Measurement of the D+-meson production cross section at low transverse momentum in p ̄p collisions at √s=1.96??TeV | |||||
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 |
CD Collaboration
× CD Collaboration× Hara, K.× Kim, S.H.× Sato, K.× Ukegawa, F. |
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著者別名 |
原, 和彦
× 原, 和彦× 金, 信弘× 佐藤, 構二× 受川, 史彦 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We report on a measurement of the D+-meson production cross section as a function of transverse momentum (pT) in proton-antiproton (p ̄p) collisions at 1.96 TeV center-of-mass energy, using the full data set collected by the Collider Detector at Fermilab in Tevatron Run II and corresponding to 10??fb?1 of integrated luminosity. We use D+→K?π+π+ decays fully reconstructed in the central rapidity region |y|<1 with transverse momentum down to 1.5??GeV/c, a range previously unexplored in p ̄p collisions. Inelastic p ̄p-scattering events are selected online using minimally biasing requirements followed by an optimized offline selection. The K?π+π+ mass distribution is used to identify the D+ signal, and the D+ transverse impact-parameter distribution is used to separate prompt production, occurring directly in the hard-scattering process, from secondary production from b-hadron decays. We obtain a prompt D+ signal of 2950 candidates corresponding to a total cross section σ(D+,1.5<pT<14.5??GeV/c,|y|<1)=71.9±6.8(stat)±9.3(syst)??μb. While the measured cross sections are consistent with theoretical estimates in each pT bin, the shape of the observed pT spectrum is softer than the expectation from quantum chromodynamics. The results are unique in p ̄p collisions and can improve the shape and uncertainties of future predictions. | |||||
言語 | en | |||||
書誌情報 |
en : Physical review D 巻 95, 号 9, p. 092006, 発行日 2017-05 |
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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.95.092006 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | c 2017 American Physical Society | |||||
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 |