Evidence for Associated Production of a Single Top Quark and W Boson in Pp Collisions at Root S=7 Tev
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Karapınar, Güler
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Abstract
Evidence is presented for the associated production of a single top quark and W boson in pp collisions at root 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 t (t) over bar background from the signal. The observed signal has a significance of 4.0 sigma 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. DOI: 10.1103/PhysRevLett.110.022003
Description
PubMed: 23383893
Keywords
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 550, cms, FOS: Physical sciences, 530, PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS, High Energy Physics - Experiment, Tellurium compounds, Physics and Astronomy (all), High Energy Physics - Experiment (hep-ex), The standard model, Bosons, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High energy physics, info:eu-repo/classification/ddc/530, Fisica delle particelle, Bosons, top quark, Tellurium compounds, High energy physics, Integrated luminosity, [Anahtar Kelime Yok], info:eu-repo/classification/ddc/550, HEP; CMS; LHC, CMS, Physics, ddc:530, 500, Física, ATLAS, LARGE HADRON COLLIDER, Multi variate analysis, The standard model, CERN LHC Coll, LHC; CMS; top quark; W boson, Physique des particules élémentaires, W boson, Medicine (all); Physics and Astronomy (all), PARTICLE PHYSICS, Kinematic properties, Atlas, LHC, high energy collider; LHC; CMS; associated production
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01 natural sciences, 0103 physical sciences
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110
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2
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