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

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

2001-03-06

arxiv.org/abs/hep-ph/0103064v1

Phys.Lett. B521 (2001) 61-66

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, ReVTeX

Scientific paper

10.1016/S0370-2693(01)01173-X

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 $\tau \to 3 e$, $\mu \to 3 e$ and $\tau \to e \mu e$ processes are predicted.

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