Electroweak-scale mirror fermions, $\mu \to e\gamma$ and $\tau \to \mu \gamma$

Abstract

The Lepton Flavour Violating (LFV) processes $\mu \to e\gamma$ and $\tau \to \mu \gamma$ are estimated in a model of electroweak-scale right-handed neutrinos. The present bounds on the branching ratios, $B(\mu \to e\gamma )<1.2\times 10^{-11}$, $B(\tau \to \mu \gamma )<6.8\times 10^{-8}$ (BaBar) and $<4.5\times 10^{-8}$ (Belle), puts strong constraints on the parameters of the model. This constraint links low energy rare decay processes to high-energy phenomena (e.g. decay lengths of the mirror charged leptons which are important in the search for the telltale like-sign dilepton events present in the model of electroweak-scale right-handed neutrinos).

8 double-column pages, 1 embedded figure. Version accepted for publication in Phys. Lett. B includes the following additions: one table, a few remarks, and three references

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• Search for Lepton Flavor Violation in the Decay tau -> mu gamma
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Cited by in corpus (24)

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• Theoretical Overview of Neutrino Properties
• Non-sterile electroweak-scale right-handed neutrinos and the dual nature of the 125-GeV scalar
• Lepton Flavor Violating Decays of Neutral Higgses in Extended Mirror Fermion Model
• An A_5 Model of Four Lepton Generations
• Lepton Flavor Violating Muon Decays in a Model of Electroweak-Scale Right-Handed Neutrinos
• Flavor Violating Transitions of Charged Leptons from a Seesaw Mechanism of Dimension Seven
• Top Quark Rare Decays via Loop-Induced FCNC Interactions in Extended Mirror Fermion Model
• Radiative and flavor-violating transitions of leptons from interactions with color-octet particles
• Consequences of a Pati-Salam unification of the electroweak-scale active ${\nu }_R$ model
• Lepton Flavor Violating Radiative Decays in EW-Scale ${\nu }_R$ Model: An Update
• Constraining Lepton Flavor Violating Higgs Couplings at the HL-LHC in the Vector Boson Fusion Channel
• Muon-to-Electron Conversion in Mirror Fermion Model with Electroweak Scale Non-Sterile Right-handed Neutrinos
• Electron Electric Dipole Moment in Mirror Fermion Model with Electroweak Scale Non-sterile Right-handed Neutrinos
• Positron Excess, Luminous-Dark Matter Unification and Family Structure
• Fourth Generation Leptons and Muon $g-2$
• On neutrino and charged lepton masses and mixings: A view from the electroweak-scale right-handed neutrino model
• Neutrino mixing and masses in a left-right model with mirror fermions
• Dynamical Electroweak Symmetry Breaking in the model of electroweak-scale right-handed neutrinos
• A model of light pseudoscalar dark matter
• The $\mu \to e\gamma$ decay in an EW-scale non-sterile RH neutrino model