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| 題名: | Measurements of differential and double-differential Drell–Yan cross sections in proton–proton collisions at √s = 8TeV |
| 作者: | 林宗泰;Ghete, V. M.;Van Haevermaet, H.;Seva, T.;Wang, J.;Poyraz, D.;Pin, A.;Fonseca De Souza, S.;Sultanov, G.;Finger, M.;Chasserat, J.;Zhukov, V.;Cakir, A.;Lipka, K.;Vargas Trevino, A. D. R.;Pietsch, N.;Schmidt, A.;Makovec, A.;Raics, P.;Ahuja, S.;Malhotra, S.;Chatterjee, K.;Gomber, B.;Banerjee, S.;Radogna, R.;Brigliadori, L.;Fanfani, A.;Cappello, G.;Costa, S.;Govoni, P.;Biasotto, M.;Gasparini, F.;Gozzelino, A.;Bernardini, J.;Spagnolo, P.;Arcidiacono, R.;Tamponi, U.;Nam, S. K.;Lee, S.;Yu, I.;Hernandez-Almada, A.;Sanchez-Hernandez, A.;Pedraza, I.;Romanowska-Rybinska, K.;Kalinowski, A.;Nguyen, F.;Andreev, Yu;Zhokin, A.;Andreev, V.;Hernandez, J. M.;Navarro De Martino, E.;Moran, D.;Calderon, A.;Bachtis, M.;Benaglia, A.;Rolandi, G.;Donegà, M.;Nessi-Tedaldi, F.;Onengut, G.;Gamsizkan, H.;Cankocak, K.;Kreczko, L.;Paramesvaran, S.;Williams, T.;Futyan, D.;Lane, R.;Cole, J. E.;Conway, R.;Shalhout, S.;Malberti, M.;Würthwein, F.;Apresyan, A.;Grünendahl, S.;Mitselmakher, G.;Markowitz, P.;Bochenek, J.;Kalakhety, H.;Berry, D.;Betts, R. R.;Dilsiz, K.;Ogul, H.;Bolognesi, S.;Maravin, Y.;Velicanu, D.;Dominguez, A.;Lazo-Flores, J.;Godshalk, A.;Won, S.;Hill, C.;Xu, L.;Redjimi, R.;Vishnevskiy, D.;Goulianos, K.;Mesropian, C.;Stone, R.;Khotilovich, V.;Libeiro, T.;Appelt, E.;Lin, C.;Lamichhane, P.;Cepeda, M. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | Astronomy;Astrophysics and Cosmology;Elementary Particles;Hadrons;Heavy Ions;Measurement Science and Instrumentation;Nuclear Energy;Nuclear Physics;Physics;Physics and Astronomy;Quantum Field Theories;Quantum Field Theory;Regular Article - Experimental Physics;String Theory |
| 日期: | 2015-04-01 |
| 上傳時間: | 2026-04-23 12:26:55 (UTC+8) |
| 出版者: | Springer New York;Berlin/Heidelberg: Springer Berlin Heidelberg |
| 摘要: | 摘要： Measurements of the differential and double-differential Drell–Yan cross sections in the dielectron and dimuon channels are presented. They are based on proton–proton collision data at s = 8 TeV recorded with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb - 1 . The measured inclusive cross section in the Z peak region (60–120 GeV ), obtained from the combination of the dielectron and dimuon channels, is 1138 ± 8 (exp) ± 25 (theo) ± 30 (lumi) \,pb , where the statistical uncertainty is negligible. The differential cross section d σ / d m in the dilepton mass range 15–2000 GeV is measured and corrected to the full phase space. The double-differential cross section d 2 σ / d m d | y | is also measured over the mass range 20 to 1500 GeV and absolute dilepton rapidity from 0 to 2.4. In addition, the ratios of the normalized differential cross sections measured at s = 7 and 8 TeV are presented. These measurements are compared to the predictions of perturbative QCD at next-to-leading and next-to-next-to-leading (NNLO) orders using various sets of parton distribution functions (PDFs). The results agree with the NNLO theoretical predictions computed with fewz 3.1 using the CT10 NNLO and NNPDF2.1 NNLO PDFs. The measured double-differential cross section and ratio of normalized differential cross sections are sufficiently precise to constrain the proton PDFs.
其他題名： Eur. Phys. J. C
出版者： Berlin/Heidelberg: Springer Berlin Heidelberg
出版日期： 2015-04
出處： The European physical journal. C, Particles and fields, 2015-04, Vol.75 (4)
資源來源： Academic Search Premier (via EbscoHost)
版權： CERN for the benefit of the CMS collaboration 2015
識別號： ISSN: 1434-6044
識別號： EISSN: 1434-6052
識別號： DOI: 10.1140/epjc/s10052-015-3364-2 |
| 顯示於類別: | [物理學系] 期刊論文
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