Aug 23 – 28, 2010
Bonn
Europe/Berlin timezone

Lepton flavour observables in the MSSM

Aug 24, 2010, 2:17 PM
15m
Gr. Hörsaal Mathematik (Bonn)

Gr. Hörsaal Mathematik

Bonn

Nussallee 12

Speaker

Mrs Jennifer Girrbach (Karlsruhe Institute of Technology, Institut fuer Theoretische Teilchenphysik)

Description

In view of the new NA62 measurement of R_K = Gamma(K -> e nu)/Gamma(K -> mu nu) probing lepton flavour universality with an unprecedented precision, I critically discuss supersymmetric contributions to this observable. The MSSM corrections to R_K are constrained using the anomalous magnetic moment of the electron a_e and the renormalisation of its mass m_e. Neither of these quantities has been studied before to place constraints on the MSSM parameter space. I include the effects of stau mixing and discuss the impact of a future determination of the lightest stau mass on R_K. Further, I present chirally enhanced non-decoupling radiative corrections to light lepton masses. By applying 't Hooft's naturalness criterion I derive new bounds on the trilinear A-terms. Finally I show how the combined information of the muon anomalous magnetic moment and of future collider data on the smuon mass can be used to disentangle the tree-level and radiatively induced contributions to the muon Yukawa coupling.

Primary author

Mrs Jennifer Girrbach (Karlsruhe Institute of Technology, Institut fuer Theoretische Teilchenphysik)

Presentation materials