Speaker
Seyed Mohsen Etesami
(Institute for Research in Fundamental Sciences (IR))
Description
In this analysis, the first evidence of events consistent with the production of a single top quark in association with a photon is reported. The analysis is based on proton-proton collisions at s√= 13 TeV and recorded by the CMS experiment in 2016, corresponding to an integrated luminosity of 35.9 fb−1. Events are selected by requiring the presence of a muon (μ), a photon (γ), an imbalance in transverse momentum from an undetected neutrino (ν), and at least two jets (j) of which exactly one is identified as associated to the hadronization of a b quark. An excess above the background-only hypothesis is observed, with a significance of 4.4 standard deviations, which is consistent with the SM prediction
