Evidence is presented for the associated production of a single top quark and W boson in pp collisions at √s=7  TeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 4.9  fb-1. The measurement is performed using events with two leptons and a jet originated from a b quark. A multivariate analysis based on kinematic properties is utilized to separate the tt̅ background from the signal. The observed signal has a significance of 4.0σ and corresponds to a cross section of 16-4+5  pb, in agreement with the standard model expectation of 15.6±0.4-1.2+1.0  pb.

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, E. Aguilo, et al. (2013). Evidence for Associated Production of a Single Top Quark and W Boson in pp Collisions at sqrt[s]=7  TeV. PHYSICAL REVIEW LETTERS, 110, 022003-1-022003-16 [10.1103/PhysRevLett.110.022003].

Evidence for Associated Production of a Single Top Quark and W Boson in pp Collisions at sqrt[s]=7  TeV

BONACORSI, DANIELE;BRAIBANT, SYLVIE;BRIGLIADORI, LUCA;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;GUIDUCCI, LUIGI;MENEGHELLI, MARCO;NAVARRIA, FRANCESCO LUIGI;PRIMAVERA, FEDERICA;ROSSI, ANTONIO MARIA;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;
2013

Abstract

Evidence is presented for the associated production of a single top quark and W boson in pp collisions at √s=7  TeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 4.9  fb-1. The measurement is performed using events with two leptons and a jet originated from a b quark. A multivariate analysis based on kinematic properties is utilized to separate the tt̅ background from the signal. The observed signal has a significance of 4.0σ and corresponds to a cross section of 16-4+5  pb, in agreement with the standard model expectation of 15.6±0.4-1.2+1.0  pb.
2013
S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, E. Aguilo, et al. (2013). Evidence for Associated Production of a Single Top Quark and W Boson in pp Collisions at sqrt[s]=7  TeV. PHYSICAL REVIEW LETTERS, 110, 022003-1-022003-16 [10.1103/PhysRevLett.110.022003].
S. Chatrchyan;V. Khachatryan;A. M. Sirunyan;A. Tumasyan;W. Adam;E. Aguilo;T. Bergauer;M. Dragicevic;J. Erö;C. Fabjan;M. Friedl;R. Frühwirth;V. M. Ghet...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/145534
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