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Title

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

AuthorsBrochero Cifuentes, J. A. ; Cabrillo, I. J. ; Calderon, Alicia ; Chazin Quero, B.; Duarte Campderros, J. ; Fernandez, M.; Fernández Manteca, P. J.; García Alonso, A.; García-Ferrero, J. ; Gómez, G. ; López Virto, A. ; Marco, Jesús ; Martínez-Rivero, Celso ; Martínez Ruiz del Arbol, P. ; Matorras, Francisco ; Piedra, Jonatan ; Prieels, C.; Rodrigo, Teresa ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Trevisani, N. ; Vila, Iván ; Vilar Cortabitarte, R.
Issue Date1-Nov-2019
PublisherSpringer
CitationEuropean Physical Journal C 79: 886 (2019)
AbstractA 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.
Publisher version (URL)http://dx.doi.org/10.1140/epjc/s10052-019-7387-y
URIhttp://hdl.handle.net/10261/213378
DOIhttp://dx.doi.org/10.1140/epjc/s10052-019-7387-y
Identifiersdoi: 10.1140/epjc/s10052-019-7387-y
issn: 1434-6052
issn: 1434-6044
Appears in Collections:(IFCA) Artículos
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