Search for new physics in top quark production in dilepton final states in proton-proton collisions at √<i>s</i>=13 TeV



Sirunyan, AM, Tumasyan, A, Adam, W, Ambrogi, F, Asilar, E, Bergauer, T, Brandstetter, J, Dragicevic, M, Eroe, J, Del Valle, A Escalante
et al (show 2245 more authors) (2019) Search for new physics in top quark production in dilepton final states in proton-proton collisions at √<i>s</i>=13 TeV. EUROPEAN PHYSICAL JOURNAL C, 79 (11). 886-.

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Abstract

A search for new physics in top quark production is performed in proton-proton collisions at 13 TeV . The data set corresponds to an integrated luminosity of 35.9 fb - 1 collected in 2016 with the CMS detector. Events with two opposite-sign isolated leptons (electrons or muons), and b quark jets in the final state are selected. The search is sensitive to new physics in top quark pair production and in single top quark production in association with a W boson. No significant deviation from the standard model expectation is observed. Results are interpreted in the framework of effective field theory and constraints on the relevant effective couplings are set, one at a time, using a dedicated multivariate analysis. This analysis differs from previous searches for new physics in the top quark sector by explicitly separating t W from t t ¯  events and exploiting the specific sensitivity of the t W process to new physics.

Item Type: Article
Uncontrolled Keywords: CMS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 05 Dec 2019 17:01
Last Modified: 24 Jan 2024 17:54
DOI: 10.1140/epjc/s10052-019-7387-y
Open Access URL: https://doi.org/10.1140/epjc/s10052-019-7387-y
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3065031

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