Speaker
Mr
Duncan Leggat
(University of Brunel)
Description
The observation of the associated production of a single top quark and W boson using 12.2 fb$^{-1}$ of pp collisions at $\sqrt{s} = 8$ TeV with the CMS experiment is presented. A multivariate analysis based on kinematic variables was used to discriminate signal from the dominant ttbar background. The observed signal has a significance of 6.0$\sigma$ and a cross section of `$23.9^{+5.7}_{-5.6}$` pb.
A cut and count cross check analysis was also carried out, finding a signal with a significance of 3.6$\sigma$ and a cross section of `$33.9^{+8.6}_{-8.6}$`. The results are in agreement with the
standard model expectation of $22.2\pm 0.6\pm 1.4$ pb.
Author
Mr
Duncan Leggat
(University of Brunel)
