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| 題名: | Measurements of tt‾ charge asymmetry using dilepton final states in pp collisions at s=8TeV |
| 作者: | 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. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | Charge asymmetry;CMS;Physics;Top |
| 日期: | 2016-09-10 |
| 上傳時間: | 2026-04-23 12:29:20 (UTC+8) |
| 出版者: | Elsevier B.V |
| 摘要: | 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 |
| 顯示於類別: | [物理學系] 期刊論文
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