Davidson S, Mangano ML, Perries S, Sordini V. Lepton flavour violating top decays at the LHC.
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2015;
75:450. [PMID:
26543404 PMCID:
PMC4623931 DOI:
10.1140/epjc/s10052-015-3649-5]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 08/28/2015] [Indexed: 06/05/2023]
Abstract
We consider lepton-flavour violating decays of the top quark, mediated by 4-fermion operators. We compile constraints on a complete set of SU(3) [Formula: see text] U(1)-invariant operators, arising from their loop contributions to rare decays and from HERA's single-top search. The bounds on e-[Formula: see text] flavour change are more restrictive than on [Formula: see text]-[Formula: see text]; nonetheless the top could decay to a jet [Formula: see text] with a branching ratio of order [Formula: see text]. We estimate that the currently available LHC data (20 fb[Formula: see text] at 8 TeV) could be sensitive to [Formula: see text]+ jet) [Formula: see text], and we extrapolate that 100 fb[Formula: see text] at 13 TeV could reach a sensitivity of [Formula: see text].
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