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

Autori

A. M. Sirunyan et al. (The CMS Collaboration) Anno 2019

Tipologia

Articolo Rivista internazionale con referaggio

Abstract

A search for new physics in top quark production is performed in proton-proton collisions at 13TeV . The data set corresponds to an integrated luminosity of 35.9fb−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 tt¯ events and exploiting the specific sensitivity of the tW process to new physics.

Referenza_Bibliografica

Eur. Phys. J. C 79 (2019) 886

Riferimento WEB

http://inspirehep.net/record/1726887

Riferimento WEB 2

https://arxiv.org/abs/1903.11144

Unita di Ricerca

RADEC

LastUpdate

05/01/2022

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