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Constraints from LFV processes in the Higgs triplet model

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Abstract

Constraints from lepton flavor violating processes are translated into lower bounds on \( {v_\Delta }{m_{{H^{ \pm \pm }}}} \) in the Higgs Triplet Model by considering correlations through the neutrino mass matrix. It is shown that μ → eγ, rare τ decays (especially, \( \tau \to \bar \mu ee \)), and the muonium conversion can give a more stringent bound on \( {v_\Delta }{m_{{H^{ \pm \pm }}}} \) in some parameter regions than the bound from \( \mu \to \bar eee \) which is expected naively to give the most stringent one. We consider the cases of suppressed \( \mu \to \bar eee \) not only for CP-conserving sets of phases but also for arbitrary values.

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Authors and Affiliations

  1. Department of Physics and R-GIRO, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan

    Takeshi Fukuyama & Hiroaki Sugiyama

  2. The Abdus Salam ICTP of UNESCO and IAEA, Strada Costiera 11, 34151, Trieste, Italy

    Koji Tsumura

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  1. Takeshi Fukuyama
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  2. Hiroaki Sugiyama
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Correspondence to Hiroaki Sugiyama.

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Fukuyama, T., Sugiyama, H. & Tsumura, K. Constraints from LFV processes in the Higgs triplet model. J. High Energ. Phys. 2010, 44 (2010). https://doi.org/10.1007/JHEP03(2010)044

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