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Search for lepton flavour violating decays of the Higgs boson to e? and e? in proton?proton collisions at s=8 TeV

Abstract: A direct search for lepton flavour violating decays of the Higgs boson (H) in the H?e?and H?e? channels is described. The data sample used in the search was collected in proton?proton collisions at ?s=8 TeV with the CMS detector at the LHC and corresponds to an integrated luminosity of 19.7 fb?1. No evidence is found for lepton flavour violating decays in either final state. Upper limits on the branching fractions, B(H?e?)<0.69%and B(H?e?)<0.035%, are set at the 95% confidence level. The constraint set on B(H?e?) is an order of magnitude more stringent than the existing indirect limits. The limits are used to constrain the corresponding flavour violating Yukawa couplings, absent in the standard model.

 Fuente: Physics Letters B, Vol.763, Pp. 472?500 (2016)

 Editorial: Elsevier

 Fecha de publicación: 01/12/2016

 Nº de páginas: 29

 Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.physletb.2016.09.062

 ISSN: 0370-2693,1873-2445

 Url de la publicación: https://doi.org/10.1016/j.physletb.2016.09.062

Autoría

KHACHATRYAN, VLADIMIR

JUAN RAMON CASTIÑEIRAS DE SAA

PABLO DE CASTRO MANZANO

MARCOS FERNANDEZ GARCIA

JUAN GARCIA FERRERO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

ANA YAIZA RODRIGUEZ MARRERO