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 ttˉ background from the signal. The observed signal has a significance of 4.0σ and corresponds to a cross section of 16+5−4 pb, in agreement with the standard model expectation of 15.6±0.4+1.0−1.2 pb.
Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Aguilo, E., 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(2) [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
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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 ttˉ background from the signal. The observed signal has a significance of 4.0σ and corresponds to a cross section of 16+5−4 pb, in agreement with the standard model expectation of 15.6±0.4+1.0−1.2 pb.
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Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione.
