Search for charged-lepton flavor violation in top quark production and decay in pp collisions at root s=13 TeV
File(s)JHEP06(2022)082.pdf (1.28 MB)
Published version
Author(s)
Type
Journal Article
Abstract
Results are presented from a search for charged-lepton flavor violating (CLFV) interactions in top quark production and decay in pp collisions at a center-of-mass energy of 13 TeV. The events are required to contain one oppositely charged electron-muon pair in the final state, along with at least one jet identified as originating from a bottom quark. The data correspond to an integrated luminosity of 138 fb−1, collected by the CMS experiment at the LHC. This analysis includes both the production (q → eμt) and decay (t → eμq) modes of the top quark through CLFV interactions, with q referring to a u or c quark. These interactions are parametrized using an effective field theory approach. With no significant excess over the standard model expectation, the results are interpreted in terms of vector-, scalar-, and tensor-like CLFV four-fermion effective interactions. Finally, observed exclusion limits are set at 95% confidence levels on the respective branching fractions of a top quark to an eμ pair and an up (charm) quark of 0.13 × 10−6 (1.31 × 10−6), 0.07 × 10−6 (0.89 × 10−6), and 0.25 × 10−6 (2.59 × 10−6) for vector, scalar, and tensor CLFV interactions, respectively.
Date Issued
2022-06-15
Date Acceptance
2022-05-09
Citation
The Journal of High Energy Physics, 2022, 2022 (6), pp.1-43
ISSN
1029-8479
Publisher
Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Start Page
1
End Page
43
Journal / Book Title
The Journal of High Energy Physics
Volume
2022
Issue
6
Copyright Statement
© 2022 The Author(s). Open Access . This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000812510500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
Hadron-Hadron Scattering
Top Physics
Publication Status
Published
OA Location
https://link.springer.com/article/10.1007/JHEP06(2022)082
Article Number
ARTN 082
Date Publish Online
2022-06-15