Inclusive and differential measurements of the tt¯ charge asymmetry in pp collisions at √s=8 TeV

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105011

Title:	Inclusive and differential measurements of the tt¯ charge asymmetry in pp collisions at √s=8 TeV
Authors:	余欣珊;Sirunyan, A.M.;Hartl, C.;Jeitler, M.;Knutsson, A.;Reis, T.;Correa Martins Junior, M.;Huertas Guativa, L.M.;Sznajder, A.;Dogra, S.;Raidal, M.;Kinnunen, R.;Hamel de Monchenault, G.;Salerno, R.;Collard, C.;Bernet, C.;Toriashvili, T.;Heister, A.;Geisler, M.;Dorland, T.;Marfin, I.;Draeger, A.R.;Wayand, S.;Papadopoulos, I.;Raics, P.;Kumar, Ashok;Mondal, K.;Ganguly, S.;Abbrescia, M.;Caputo, C.;Pugliese, G.;Braibant-Giacomelli, S.;Gonzi, S.;Lenzi, P.;Redaelli, N.;Lacaprara, S.;Vitulo, P.;Serban, A.T.;Tonelli, G.;Mariotti, C.;Gyun, D.;Lee, K.;Md Ali, M.A.B.;Górski, M.;Palichik, V.;Smirnov, V.;Spiridonov, A.;Leonidov, A.;Kalinin, A.;Escalante Del Valle, A.;Fernández Ramos, J.P.;Martinez Rivero, C.;De Guio, F.;Elliott-Peisert, A.;Guthoff, M.;Harris, P.;Kousouris, K.;Krajczar, K.;Mulders, M.;Bertl, W.;Ingram, Q.;Dünser, M.;Quittnat, M.;Wallny, R.;Robmann, P.;Fiori, F.;Heath, G.P.;Heath, H.F.;Paramesvaran, S.;Shepherd-Themistocleous, C.H.;Womersley, W.J.;Elwood, A.;Nikitenko, A.;Pela, J.;Gardner, M.;Wei, H.;Vartak, A.;Bauerdick, L.A.T.;Sexton-Kennedy, E.;Weber, H.A.;Carnes, A.;Curry, D.;Konigsberg, J.;Veeraraghavan, V.;Kalakhety, H.;Ozok, F.;Majumder, D.;Kellogg, R.G.;Kunkle, J.;Hahn, K.A.;Kubik, A.;Brinkerhoff, A.;Wolf, M.;Liu, B.;Koay, S.A.;Palmer, C.;Galanti, M.;Kaplan, S.;York, A.;Dudero, P.R.;Dodd, L.
Contributors:	理學院物理學系
Keywords:	Charge asymmetry;CMS;Physics;Top quark
Date:	2016-06-10
Issue Date:	2026-04-23 12:03:45 (UTC+8)
Publisher:	Elsevier B.V
Abstract:	摘要： The tt¯ charge asymmetry is measured in proton–proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb−1. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010±0.0068 (stat)±0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the tt¯ system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of −0.0035±0.0072 (stat)±0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model. 出版者： Elsevier B.V 出版日期： 2016-06-10 出處： Physics letters. B, 2016-06, Vol.757, p.154-179 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2016 CERN for the benefit of the CMS Collaboration 識別號： ISSN: 0370-2693 識別號： EISSN: 1873-2445 識別號： DOI: 10.1016/j.physletb.2016.03.060
Appears in Collections:	[Department of Physics] journal & Dissertation

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