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

CMS Collaboration

doi:10.1103/PhysRevLett.110.022003

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

CMS Collaboration

Research output: Contribution to journal › Article › Research › peer-review

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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 tt‾ 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.

Original language	English
Article number	022003
Number of pages	16
Journal	Physical Review Letters
Volume	110
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.110.022003
Publication status	Published - 2013
Externally published	Yes

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10.1103/PhysRevLett.110.022003

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Cite this

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title = "Evidence for Associated Production of a Single Top Quark and W Boson in pp Collisions at √s = 7 TeV",

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 tt‾ 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.",

author = "J Nash and {CMS Collaboration}",

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AU - Nash, J

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N2 - 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 tt‾ 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.

AB - 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 tt‾ 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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