6533b850fe1ef96bd12a8505

RESEARCH PRODUCT

Disentangling new physics contributions in lepton flavour violating τ decays

Emilie PassemarAlejandro CelisVincenzo Cirigliano

subject

PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsPhysics beyond the Standard ModelHigh Energy Physics::LatticeFlavourHadronHigh Energy Physics::Phenomenologylepton flavour violationHiggs decays01 natural sciencesNuclear physics0103 physical sciencesHiggs bosonEffective field theoryHigh Energy Physics::Experiment010306 general physicstau decaysBosonLepton

description

Abstract The possibility to discriminate between different operators contributing to lepton flavour violating tau decays is discussed within an effective field theory framework. Correlations among decay rates in different channels as well as differential distributions in many-body decays are considered. Recent developments in the determination of the hadronic form factors for τ → l π π ( l = e , μ ) decays are incorporated in the analysis. The above issues are exemplified by considering a Higgs-like boson with lepton flavour violating couplings. Implications of the search for lepton flavour violating Higgs decays performed recently by the CMS collaboration are also discussed.

10.1016/j.nuclphysbps.2015.09.269http://dx.doi.org/10.1016/j.nuclphysbps.2015.09.269