Measurement of the associated production of a single top quark and a Z boson in pp collisions at s=13TeV

• Main Authors: Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli
• Format: Article
• Language: English; English
• Published: Elsevier 2018
• Subjects: Q Science (General); QC Physics
• Online Access: http://irep.iium.edu.my/69689/1/69689_Measurement%20of%20the%20associated%20production_article.pdf; http://irep.iium.edu.my/69689/2/69689_Measurement%20of%20the%20associated%20production_scopus.pdf; http://irep.iium.edu.my/69689/; https://reader.elsevier.com/reader/sd/pii/S0370269318301278?token=316C1A72BFAE1DF43EF494B3C605AD3B2EF34A7E18629B8AFB9687AC4FEC83A4A8AD6496EEA8B4FBA38F246D903B27FF

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 → Wb�+�−q) = 123+33 −31(stat) +29 −23(syst) fb, where � stands for electrons, muons, or τ leptons, with observed and expected significances of 3.7 and 3.1 standard deviations, respectively