Higgs-induced lepton flavor violation

Abstract

Due to the smallness of the lepton Yukawa couplings, higher-dimensional operators can give a significant contribution to the lepton masses. In this case, the lepton mass matrix and the matrix of lepton-Higgs couplings are misaligned leading to lepton flavor violation (LFV) mediated by the Standard Model Higgs boson. We derive model-independent bounds on the Higgs flavor violating couplings and quantify LFV in decays of leptons and electric dipole moments for a class of lepton-Higgs operators contributing to lepton masses. We find significant Higgs-mediated LFV effects at both 1-loop and 2-loop levels.

15 pages, added experimental limits on plots, version in press

References in corpus (5)

• Higgs-dependent Yukawa couplings
• Measuring the Higgs Sector
• Neutrino mass from higher than d=5 effective operators in SUSY, and its test at the LHC
• Higgs mediated lepton flavor violating tau decays $\tau \to \mu \gamma$ and $\tau \to \mu \gamma \gamma$ in effective theories
• CP violation with Higgs-dependent Yukawa couplings

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