Evidence for associated production of a single top quark and W boson in pp collisions at sqrt(s) = 7 TeV
(2013) Physical Review Letters — Vol. 110, p. 22003 (2013)
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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 $t\bar{t}$ 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.
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Citations
CMS, Basegmez, S., Bruno, G., Castello, R., Ceard, L., Delaere, C., Du Pree, T., Favart, D., Forthomme, L., Giammanco, A., Hollar, J., Lemaitre, V., Liao, J., Militaru, O., Nuttens, C., Pagano, D., Pin, A., Piotrzkowski, K., Schul, N., 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, 22003. https://doi.org/10.1103/PhysRevLett.110.022003 (Original work published 2013)