Measurement of masses in the tt̄ system by kinematic endpoints in pp collisions at √s = 7 TeV

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105216

Title:	Measurement of masses in the tt̄ system by kinematic endpoints in pp collisions at √s = 7 TeV
Authors:	余欣珊;Chatrchyan, S;Tumasyan, A;Frühwirth, R;Liko, D;Keaveney, J;Van Mulders, P;Caebergs, T;Pol, M E;Gregores, E M;Piperov, S;Liang, D;Liu, S;Carrillo Montoya, C A;Lindén, T;Sammet, J;Dorland, T;Eckstein, D;Mankel, R;Marienfeld, M;Dierlamm, A;Hackstein, C;Anagnostou, G;Saoulidou, N;Aslanoglou, X;Flouris, G;Bhardwaj, A;Naimuddin, M;Paktinat Mehdiabadi, S;Nuzzo, S;Gallo, E;Piccolo, D;Branca, A;Biasini, M;Bagliesi, G;Boccali, T;Palla, F;Squillacioti, P;Verdini, P G;Kim, J E;Butler, P H;Reucroft, S;Khan, W A;Gallinaro, M;Golovtsov, V;Oreshkin, V;Vorobyev, An;Gninenko, S;Alcaraz Maestre, J;Domínguez Vázquez, D;Gonzalez Lopez, O;Quintario Olmeda, A;Camporesi, T;d'Enterria, D;Worm, S D;Eller, P;Nägeli, C;Asavapibhop, B;Surat, U E;Kaya, M;Goldstein, J;Williams, T;Petyt, D;Pela, J;Raymond, D M;Breedon, R;Calderon De La Barca Sanchez, M;Gardner, M;Rutherford, B;Babb, J;Andrews, W;Tadel, M;Danielson, T;Golf, F;Lowette, S;Apresyan, A;Calamba, A;Cihangir, S;Marraffino, J M;Maruyama, S;Acosta, D;Bourilkov, D;Hugon, J;Korytov, A;Yi, K;Hu, G;Levin, A;Wyslouch, B;Haupt, J;Pollack, B;Brinkerhoff, A;Smith, G;Lopes Pegna, D;Raval, A;Silvers, D;Garcia-Bellido, A;Carlsmith, D;Klabbers, P;Klukas, J;Mozer, M U;Pierro, G A
Contributors:	理學院物理學系
Date:	2013-01-01
Issue Date:	2026-04-23 12:11:27 (UTC+8)
Publisher:	Springer New York
Abstract:	摘要： A simultaneous measurement of the top-quark, W-boson, and neutrino masses is reported for [Formula: see text] events selected in the dilepton final state from a data sample corresponding to an integrated luminosity of 5.0 fb-1 collected by the CMS experiment in pp collisions at [Formula: see text]. The analysis is based on endpoint determinations in kinematic distributions. When the neutrino and W-boson masses are constrained to their world-average values, a top-quark mass value of [Formula: see text] is obtained. When such constraints are not used, the three particle masses are obtained in a simultaneous fit. In this unconstrained mode the study serves as a test of mass determination methods that may be used in beyond standard model physics scenarios where several masses in a decay chain may be unknown and undetected particles lead to underconstrained kinematics.A simultaneous measurement of the top-quark, W-boson, and neutrino masses is reported for [Formula: see text] events selected in the dilepton final state from a data sample corresponding to an integrated luminosity of 5.0 fb-1 collected by the CMS experiment in pp collisions at [Formula: see text]. The analysis is based on endpoint determinations in kinematic distributions. When the neutrino and W-boson masses are constrained to their world-average values, a top-quark mass value of [Formula: see text] is obtained. When such constraints are not used, the three particle masses are obtained in a simultaneous fit. In this unconstrained mode the study serves as a test of mass determination methods that may be used in beyond standard model physics scenarios where several masses in a decay chain may be unknown and undetected particles lead to underconstrained kinematics. 出版日期： 2013-01-01 出處： The European physical journal. C, Particles and fields, 2013-01, Vol.73 (7), p.2494 資源來源： Publicly Available Content Database 識別號： ISSN: 1434-6044 識別號： DOI: 10.1140/epjc/s10052-013-2494-7
Appears in Collections:	[Department of Physics] journal & Dissertation

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