DESY Theory Seminar

Higgs-induced Lepton Flavor Violation

by Andreas Goudelis (DESY)

Europe/Berlin
Universe

Universe

Description
We examine the consequences of considering that the Yukawa couplings depend on the Higgs field through operators of mass dimension greater than 4, focusing mainly on the lepton sector. Due to the smallness especially of the lepton Yukawa couplings, these operators can have a significant contribution to the lepton masses. In such a case, the lepton mass matrix and the matrix of the Higgs-lepton couplings can be misaligned leading to Lepton Flavor Violation (LFV) mediated by the Standard Model Higgs boson. We show model-independent bounds on the Higgs LFV couplings and quantify LFV in radiative decays of leptons and electric dipole moments for a class of lepton-Higgs operators contributing to lepton masses. Besides, we comment on relevant observables at the LHC.