1209.3489 (CMS Collaboration)

Evidence for associated production of a single top quark and W boson in
pp collisions at 7 TeV    [PDF]

CMS Collaboration

Evidence is presented for the associated production of a single top quark and W boson in pp collisions at sqrt(s) = 7 TeV with the CMS experiment at the LHC. The analyzed data corresponds to an integrated luminosity of 4.9 inverse femtobarns. 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-bar background from the signal. The observed signal has a significance of 4.0 sigma 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.

View original: http://arxiv.org/abs/1209.3489