Lepton flavour violating top decays at the LHC

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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–[For...

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Detalles Bibliográficos
Autores principales: Davidson, Sacha, Mangano, Michelangelo L., Perries, Stéphane, Sordini, Viola
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2015
Materias:
Regular Article - Theoretical Physics
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4623931/
https://www.ncbi.nlm.nih.gov/pubmed/26543404
http://dx.doi.org/10.1140/epjc/s10052-015-3649-5
Descripción
Sumario: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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