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Title: | Search for new physics in top quark production in dilepton final states in proton-proton collisions at √s=13TeV |
Authors: | CMS Collaboration Sirunyan, A. M. CHAUHAN, S. DUBE, SOURABH HEGDE, V. KAPOOR, A. KOTHEKAR, K. PANDEY, S. RANE, A. RASTOGI, A. SHARMA, SEEMA et al. Dept. of Physics |
Keywords: | Physics TOC-NOV-2019 2019 |
Issue Date: | Nov-2019 |
Publisher: | Springer Nature |
Citation: | European Physical Journal C, 79(11). |
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. |
URI: | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/4199 https://doi.org/10.1140/epjc/s10052-019-7387-y |
ISSN: | 1434-6044 1434-6052 |
Appears in Collections: | JOURNAL ARTICLES |
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