Measurement of the associated production of a single top quark and a Z boson in pp collisions at sqrt(s) = 13 TeVстатья
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Дата последнего поиска статьи во внешних источниках: 28 сентября 2021 г.
Аннотация:A measurement is presented of the associated production of a single top quark and a Z boson. The study uses data from proton-proton collisions at s√= 13 TeV recorded by the CMS experiment, corresponding to an integrated luminosity of 35.9 fb−1. Using final states with three leptons (electrons or muons), the tZq production cross section is measured to be σ(pp→tZq→Wbℓ+ℓ−q) = 123+33−31 (stat) +29−23 (syst) fb, where ℓ stands for electrons, muons, or τ leptons, with observed and expected significances of 3.7 and 3.1 standard deviations, respectively.