In:
The European Physical Journal C, Springer Science and Business Media LLC, Vol. 79, No. 11 ( 2019-11)
Abstract:
A search for new physics in top quark production is performed in proton-proton collisions at $$13\,\text {TeV} $$ 13 TeV . The data set corresponds to an integrated luminosity of $$35.9{\,\text {fb}^{-1}} $$ 35.9 fb - 1 collected in 2016 with the CMS detector. Events with two opposite-sign isolated leptons (electrons or muons), and $$\mathrm{b}$$ 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 $$\mathrm{W}$$ 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 $$\mathrm{t}\mathrm{W}$$ t W from $$\mathrm{t}{\bar{\mathrm{t}}}$$ t t ¯ events and exploiting the specific sensitivity of the $$\mathrm{t}\mathrm{W}$$ t W process to new physics.
Type of Medium:
Online Resource
ISSN:
1434-6044
,
1434-6052
DOI:
10.1140/epjc/s10052-019-7387-y
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2019
detail.hit.zdb_id:
1397769-6
detail.hit.zdb_id:
1459069-4
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