Measurements of tt‾ charge asymmetry using dilepton final states in pp collisions at s=8TeV

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105463

Title:	Measurements of tt‾ charge asymmetry using dilepton final states in pp collisions at s=8TeV
Authors:	余欣珊;Sirunyan, A.M.;Hartl, C.;Jeitler, M.;Matsushita, T.;Mikulec, I.;Knutsson, A.;Caillol, C.;Karapostoli, G.;Bernardes, C.A.;Dogra, S.;Aleksandrov, A.;Wang, C.;Micanovic, S.;Mavromanolakis, G.;Ochando, C.;Contardo, D.;Mukherjee, S.;Pook, T.;Nowack, A.;Beernaert, K.;Burgmeier, A.;Seitz, C.;Perieanu, A.;Usai, E.;Vanelderen, L.;Flouris, G.;Paradas, E.;Strologas, J.;Bencze, G.;Karancsi, J.;Sahoo, N.;Bhardwaj, A.;Kumar, V.;Cristella, L.;De Palma, M.;Lista, L.;Ligabue, F.;Kim, H.;Gyun, D.;Hong, B.;Lee, B.;Yusli, M.N.;Shoaib, M.;Frueboes, T.;Sulimov, V.;Gavrilov, V.;Ruiz-Jimeno, A.;David, A.;Mersi, S.;Sakulin, H.;Schäfer, C.;Steggemann, J.;Robmann, P.;Meng, Z.;Cole, J.E.;Rohlf, J.;Zou, D.;Breedon, R.;Chertok, M.;Funk, G.;Clare, R.;Holzner, A.;Tadel, M.;Duarte, J.;Chaves, J.;Mirman, N.;Skinnari, L.;Wittich, P.;Beretvas, A.;Hare, D.;Lykken, J.;Rank, D.;Snowball, M.;Terentyev, N.;Wang, S.;Merlo, J.-P.;Mermerkaya, H.;Swartz, M.;Khalil, S.;Saini, L.K.;Kolberg, T.;Tonjes, M.B.;Barbieri, R.;Marini, A.C.;Yang, M.;Lesko, Z.;Bose, S.;Meier, F.;Hahn, K.A.;Kubik, A.;Xu, L.;Heideman, J.;Huang, T.;Libeiro, T.;Volobouev, I.;Velkovska, J.;Neu, C.;Lamichhane, P.;Loveless, R.;Verwilligen, P.
Contributors:	理學院物理學系
Keywords:	Charge asymmetry;CMS;Physics;Top
Date:	2016-09-10
Issue Date:	2026-04-23 12:29:20 (UTC+8)
Publisher:	Elsevier B.V
Abstract:	摘要： The charge asymmetry in tt‾ events is measured using dilepton final states produced in pp collisions at the LHC at s=8TeV. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 19.5fb−1. The measurements are performed using events with two oppositely charged leptons (electrons or muons) and two or more jets, where at least one of the jets is identified as originating from a bottom quark. The charge asymmetry is measured from differences in kinematic distributions, unfolded to the parton level, of positively and negatively charged top quarks and leptons. The tt‾ and leptonic inclusive charge asymmetries are found to be 0.011±0.011(stat)±0.007(syst) and 0.003±0.006(stat)±0.003(syst), respectively. These results, as well as charge asymmetry measurements made as a function of the invariant mass, rapidity, and transverse momentum of the tt‾ system, are in agreement with predictions of the standard model. 出版者： Elsevier B.V 出版日期： 2016-09-10 出處： Physics letters. B, 2016-09, Vol.760 (C), p.365-386 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2016 The Author(s) 識別號： ISSN: 0370-2693 識別號： EISSN: 1873-2445 識別號： DOI: 10.1016/j.physletb.2016.07.006
Appears in Collections:	[Department of Physics] journal & Dissertation

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