Abstract
We evaluate the lepton flavor violating (LFV) decays of Higgs bosons in several extensions of the standard model (SM), including both the effective Lagrangian approach and several specific models. Within the effective Lagrangian case, we focus on the dimension-6 operators that induce LFV vertices for the Higgs and Z bosons. For those operators whose coefficients cannot be constrained by present data, we estimate a branching ratio (B.R.) of the order of for the LFV Higgs boson decays, which can be detected at future hadron colliders. For the other operators that are bounded by current limits on the LFV transition, there are strong bounds on transitions, which imply however, even in this case the decay modes are allowed to have a B.R. of the order In the case of the general two-Higgs-doublet model, we also obtain whereas for the SM with massive neutrinos and the minimal supersymmetric-SM, the B.R.’s of the corresponding LFV Higgs decays are strongly suppressed.
- Received 12 November 1999
DOI:https://doi.org/10.1103/PhysRevD.62.116005
©2000 American Physical Society