Tau-Mu Flavor Violation and the Scale of New Physics

Details Tau-Mu Flavor Violation and the Scale of New Physics Tau-Mu Flavor Violation and the Scale of New Physics

2003-07-14

arxiv.org/abs/hep-ph/0307182v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Proceedings for MRST 2003, Joe Schechter Fest, Syracuse University, New York, May 2003. 8 pages, 2 figures

Scientific paper

10.1063/1.1632186

Motivated by the strong experimental evidence of large nu_mu - nu_tau neutrino oscillations, we study existing constraints for related mu - tau flavor violation. Using a general bottom-up approach, we construct dimension-6 effective fermionic operators whose coefficients encode the scale of new physics associated with mu - tau flavor violation, which is a piece in the puzzle of the origin of neutrino oscillations. We survey existing experimental bounds on this scale, which arise mostly from tau and B decays. In many cases the new physics scale is constrained to be above a few TeV. We also discuss the operators which are either weakly constrained or, at present, subject to no experimental bounds.

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