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| 題名: | Measurement of t t ¯ production with additional jet activity, including b quark jets, in the dilepton decay channel using pp collisions at √s = 8 TeV |
| 作者: | 余欣珊;Asilar, E.;Cornelis, T.;De Wolf, E. A.;De Bruyn, I.;Keaveney, J.;Olbrechts, A.;Benucci, L.;Caudron, A.;Quertenmont, L.;Da Costa, E. M.;Bernardes, C. A.;Gregores, E. M.;Chen, M.;Brigljevic, V.;Fabbro, B.;Dietz-Laursonn, E.;Heidemann, C.;Reithler, H.;Mankel, R.;Mussgiller, A.;Ntomari, E.;Draeger, A. R.;Erfle, J.;Junkes, A.;Schettler, H.;Akbiyik, M.;De Boer, W.;Sarkar, S.;Topkar, A.;Dewanjee, R. K.;Masetti, G.;Chiorboli, M.;Gori, V.;Lanza, G.;Lista, L.;Merola, M.;Thyssen, F.;Santocchia, A.;Androsov, K.;Boccali, T.;Fiori, F.;La Licata, C.;Choi, S.;Yoo, H. D.;Komaragiri, J. R.;Hoorani, H. R.;Gavrilenko, M.;Zarubin, A.;Safronov, G.;Bylinkin, A.;Boos, E.;Alcaraz Maestre, J.;Fernandez, M.;Marco, J.;Bendavid, J.;Dupont, N.;Hammer, J.;Krajczar, K.;Kaestli, H. C.;Ngadiuba, J.;Grundler, U.;Ozturk, S.;Grimes, M.;Worm, S. D.;Baber, M.;Malik, S.;Hatakeyama, K.;Cox, P. T.;Kennedy, E.;Pierini, M.;Vogel, H.;Skinnari, L.;Sun, W.;Banerjee, S.;Green, D.;Harris, R. M.;Lykken, J.;Weber, H. A.;Ogul, H.;Majumder, D.;Mohammadi, A.;Gomez, J. A.;Tonwar, S. C.;Velicanu, D.;Klapoetke, K.;Oliveros, S.;Kravchenko, I.;Schmitt, M.;Musienko, Y.;Bylsma, B.;Harel, A.;Khukhunaishvili, A.;Petrillo, G.;Arora, S.;Park, M.;York, A.;Pakhotin, Y.;Safonov, A.;Hervé, A.;Loveless, R. |
| 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: | 2016-07-01 |
| 上傳時間: | 2026-04-23 12:11:59 (UTC+8) |
| 出版者: | Springer New York;Berlin/Heidelberg: Springer Berlin Heidelberg |
| 摘要: | 摘要： Jet multiplicity distributions in top quark pair ( t t ¯ ) events are measured in pp collisions at a centre-of-mass energy of 8 TeV with the CMS detector at the LHC using a data set corresponding to an integrated luminosity of 19.7 fb -1 . The measurement is performed in the dilepton decay channels ( e + e - , μ + μ - , and e ± μ ∓ ). The absolute and normalized differential cross sections for t t ¯ production are measured as a function of the jet multiplicity in the event for different jet transverse momentum thresholds and the kinematic properties of the leading additional jets. The differential t t ¯ b and t t ¯ b b ¯ cross sections are presented for the first time as a function of the kinematic properties of the leading additional b jets. Furthermore, the fraction of events without additional jets above a threshold is measured as a function of the transverse momenta of the leading additional jets and the scalar sum of the transverse momenta of all additional jets. The data are compared and found to be consistent with predictions from several perturbative quantum chromodynamics event generators and a next-to-leading order calculation.
其他題名： Eur. Phys. J. C
出版者： Berlin/Heidelberg: Springer Berlin Heidelberg
出版日期： 2016-07
出處： The European physical journal. C, Particles and fields, 2016-07, Vol.76 (7)
資源來源： Publicly Available Content Database
版權： CERN for the benefit of the CMS collaboration 2016
識別號： ISSN: 1434-6044
識別號： EISSN: 1434-6052
識別號： DOI: 10.1140/epjc/s10052-016-4105-x |
| 顯示於類別: | [物理學系] 期刊論文
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