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| 題名: | Measurement of the muon charge asymmetry in inclusive pp →w+X production at s =7TeV and an improved determination of light parton distribution functions |
| 作者: | 余欣珊;Chatrchyan, S.;Besancon, M.;Couderc, F.;Dejardin, M.;Denegri, D.;Fabbro, B.;Faure, J.L.;Ferri, F.;Ganjour, S.;Givernaud, A.;Gras, P.;Hamel de Monchenault, G.;Jarry, P.;Locci, E.;Malcles, J.;Nayak, A.;Rander, J.;Rosowsky, A.;Titov, M.;Florent, A.;Granier de Cassagnac, R.;Mine, P.;Mironov, C.;Naranjo, I.N.;Nguyen, M.;Ochando, C.;Paganini, P.;Sabes, D.;Salerno, R.;Sauvan, J.B.;Sirois, Y.;Veelken, C.;Yilmaz, Y.;Zabi, A.;Agram, J.-L.;Andrea, J.;Bloch, D.;Brom, J.-M.;Chabert, E.C.;Collard, C.;Conte, E.;Drouhin, F.;Fontaine, J.-C.;Gele, D.;Goerlach, U.;Goetzmann, C.;Juillot, P.;Le Bihan, A.-C.;van Hove, P.;Gadrat, S.;Beauceron, S.;Beaupere, N.;Boudoul, G.;Brochet, S.;Chasserat, J.;Chierici, R.;Contardo, D.;Depasse, P.;El Mamouni, H.;Fan, J.;Fay, J.;Gascon, S.;Gouzevitch, M.;Ille, B.;Kurca, T.;Lethuillier, M.;Mirabito, L.;Perries, S.;Ruiz Alvarez, J.D.;Sgandurra, L.;Sordini, V.;Vander Donckt, M.;Verdier, P.;Viret, S.;Xiao, H. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | High Energy Physics - Experiment;Physics |
| 日期: | 2014-08-13 |
| 上傳時間: | 2026-04-23 12:15:10 (UTC+8) |
| 出版者: | American Physical Society |
| 摘要: | 摘要： Measurements of the muon charge asymmetry in inclusive pp to WX production at sqrt(s)=7 TeV are presented. The data sample corresponds to an integrated luminosity of 4.7 inverse femtobarns recorded with the CMS detector at the LHC. With a sample of more than twenty million W to mu nu events, the statistical precision is greatly improved in comparison to previous measurements. These new results provide additional constraints on the parton distribution functions of the proton in the range of the Bjorken scaling variable x from 10E-3 to 10E-1. These measurements and the recent CMS measurement of associated W + charm production are used together with the cross sections for inclusive deep inelastic ep scattering at HERA in a next-to-leading-order QCD analysis. The determination of the valence quark distributions is improved, and the strange-quark distribution is probed directly through the leading-order process g + s to W + c in proton-proton collisions at the LHC.
出版者： American Physical Society
出版日期： 2014
出處： Physical review. D, 2014, Vol.90
版權： CC0 1.0 - Universal
識別號： ISSN: 2470-0010
識別號： EISSN: 2470-0029
識別號： DOI: 10.1103/PhysRevD.90.032004 |
| 顯示於類別: | [物理學系] 期刊論文
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