dc.contributor.author The CMS collaboration 2022-09-29T15:06:27Z 2022-09-29T15:06:27Z 2022 The CMS collaboration. "Search for charged-lepton flavor violation in top quark production and decay in pp collisions at s√ = 13 TeV." Journal of High Energy Physics, 2022, (2022) Springer Nature: https://doi.org/10.1007/JHEP06(2022)082. https://hdl.handle.net/1911/113431 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. eng Springer Nature 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. https://creativecommons.org/licenses/by/4.0/ Search for charged-lepton flavor violation in top quark production and decay in pp collisions at s√ = 13 TeV Journal article Journal of High Energy Physics 2022 JHEP06-2022-082 Text https://doi.org/10.1007/JHEP06(2022)082 publisher version 82
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