A measurement of the mass difference between the top and the antitop quark (delta mt = mt - mtbar) is performed using events with a muon or an electron and at least four jets in the final state. The analysis is based on data collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4:96+-0:11 fb-1, and yields the value of delta mt = -0:44+-0:46(stat)+-0:27(syst) GeV. This result is consistent with equality of particle and antiparticle masses required by CPT invariance, and provides a signicantly improved precision relative to existing measurements

V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, M. DRAGICEVIC, et al. (2012). Measurement of the mass difference between top and antitop quarks. JOURNAL OF HIGH ENERGY PHYSICS, 06, 109-144 [10.1007/JHEP06(2012)109].

Measurement of the mass difference between top and antitop quarks

BONACORSI, DANIELE;BRAIBANT, SYLVIE;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;MENEGHELLI, MARCO;NAVARRIA, FRANCESCO LUIGI;ROSSI, ANTONIO MARIA;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;GUIDUCCI, LUIGI;PRIMAVERA, FEDERICA;BRIGLIADORI, LUCA
2012

Abstract

A measurement of the mass difference between the top and the antitop quark (delta mt = mt - mtbar) is performed using events with a muon or an electron and at least four jets in the final state. The analysis is based on data collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4:96+-0:11 fb-1, and yields the value of delta mt = -0:44+-0:46(stat)+-0:27(syst) GeV. This result is consistent with equality of particle and antiparticle masses required by CPT invariance, and provides a signicantly improved precision relative to existing measurements
2012
V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, M. DRAGICEVIC, et al. (2012). Measurement of the mass difference between top and antitop quarks. JOURNAL OF HIGH ENERGY PHYSICS, 06, 109-144 [10.1007/JHEP06(2012)109].
V. KHACHATRYAN; A.M. SIRUNYAN; A. TUMASYAN; W. ADAM; T. BERGAUER; M. DRAGICEVIC; J. ER¨O; C. FABJAN; M. FRIEDL; R. FRUHWIRTH; V.M. GHETE; J. HAMMER; S...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/127912
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