Search for new physics in top quark production in dilepton final states in proton-proton collisions at √s=13TeV; European Physical Journal C; Vol. 79, iss. 11

Search for new physics in top quark production in dilepton final states in proton-proton collisions at √s=13TeV; European Physical Journal C; Vol. 79, iss. 11

Bibliographische Detailangaben
Parent link:	European Physical Journal C Vol. 79, iss. 11.— 2019.— [886, 29 p.]
Körperschaft:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Weitere Verfasser:	Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Asilar E. Ece, Bergauer T. Thomas, Babaev A. A. Anton Anatoljevich, Okhotnikov V. V. Vitaly Vladimirovich
Zusammenfassung:	Title screen A search for new physics in top quark production is performed in proton-proton collisions at 13TeV13TeV. The data set corresponds to an integrated luminosity of 35.9fb−135.9fb−1 collected in 2016 with the CMS detector. Events with two opposite-sign isolated leptons (electrons or muons), and bb 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 WW 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 tWtW from tt¯tt¯ events and exploiting the specific sensitivity of the tWtW process to new physics.
Sprache:	Englisch
Veröffentlicht:	2019
Schlagworte:	электронный ресурс труды учёных ТПУ протон-протонные соударения кварки
Online-Zugang:	https://doi.org/10.1140/epjc/s10052-019-7387-y
Format:	Elektronisch Buchkapitel
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662412

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