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

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2019
Sirunyan2019_Article_SearchForNewPhysicsInTopQuarkP.pdf (1.555Mb)
Authors
Sirunyan, A M
Tumasyan, A
Adam, W
Ambrogi, F
Adžić, Petar
Ćirković, Predrag
Devetak, Damir
Đorđević, Miloš
Milenović, Predrag
Milošević, Jovan
Contributors
CMS Collaboration
CMS Collaboration (ukupan broj autora: 2293)
Article (Published version)
,
© 2019, CERN for the benefit of the CMS collaboration
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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 t W from t t ¯ events and exploiting the specific sensitivity of the t W process to new physics. © 2019, CERN for the benefit of the CMS collaboration.
Source:
European Physical Journal C, 2019, 79, 11

DOI: 10.1140/epjc/s10052-019-7387-y

ISSN: 1434-6044

WoS: 000493654200001

Scopus: 2-s2.0-85074277455
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URI
http://vinar.vin.bg.ac.rs/handle/123456789/8634
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Vinča

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