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

Sirunyan, A.M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Search for new physics in top quark production in dilepton final states in proton-proton collisions at √s = 13 TeV. The European Physical Journal C, 79 (11). pp. 1-29. E-ISSN 1434-6052

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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 tW from t¯t events and exploiting the specific sensitivity of the tW process to new physics.

Item Type:	Article (Journal)
Additional Information:	7861/79769
Uncontrolled Keywords:	top quark production, dilepton, proton-proton collisions
Subjects:	Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	24 Mar 2020 10:18
Last Modified:	24 Mar 2020 15:27
URI:	http://irep.iium.edu.my/id/eprint/79769

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