Implications of the muon anomalous magnetic moment and Higgs-mediated flavor changing neutral currents

Abstract

In the light of the recent measurement of the muon anmalous magnetic moment $a_{\mu }$ by the Muon $(g-2)$ Collaboration, we examine the contribution to $a_{\mu }$ from the exchange of flavor changing scalars. Assuming that the heavier generations have larger flavor changing couplings, we obtain a bound on $\mu -\tau$ Yukawa coupling for a given scalar mass. Constraints on other flavor changing/conserving couplings are also obtained from the lepton flavor violating decays of muon and tau lepton, and bounds on the branching ratio of $\tau \to 3e$, $\mu \to 3e$ and $\tau \to e\mu e$ processes are predicted.

6 pages, ReVTeX

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Cited by in corpus (11)

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• τ^- \to μ^- π^0(η,η') Decays in New Physics Scenarios beyond the Standard Model
• Lepton Dipole Moments and Rare Decays in the CP-violating MSSM with Nonuniversal Soft-Supersymmetry Breaking
• Electric charge quantization and the muon anomalous magnetic moment
• Neutral top-pion and lepton flavor violating processes
• Muon anomalous magnetic moment due to the brane-stretching effect
• Fermion masses and neutrino mixing in an U(1)_H flavor symmetry model with hierarchical radiative generation for light charged fermion masses
• Lepton flavor violating signals of the neutral top-pion in future lepton colliders