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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)
Publisher: Elsevier
Publication date: 01/12/2016
No. of pages: 29
Publication type: Article
DOI: 10.1016/j.physletb.2016.09.062
ISSN: 0370-2693,1873-2445
Publication Url: https://doi.org/10.1016/j.physletb.2016.09.062
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KHACHATRYAN, VLADIMIR
JOSE IBAN CABRILLO BARTOLOME
ALICIA CALDERON TAZON
JUAN RAMON CASTIÑEIRAS DE SAA
PABLO DE CASTRO MANZANO
MARCOS FERNANDEZ GARCIA
JUAN GARCIA FERRERO
GERVASIO GOMEZ GRAMUGLIO
MARIA AMPARO LOPEZ VIRTO
JESUS MARCO DE LUCAS
RAFAEL JOSE MARCO DE LUCAS
CELSO MARTINEZ RIVERO
FRANCISCO MATORRAS WEINIG
JONATAN PIEDRA GOMEZ
MARIA TERESA RODRIGO ANORO
ANA YAIZA RODRIGUEZ MARRERO
ALBERTO RUIZ JIMENO
LUCA SCODELLARO
NICOLO TREVISANI
IVAN VILA ALVAREZ
ROCIO VILAR CORTABITARTE
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