Rare K decays in a model of quark and lepton masses

Details Rare K decays in a model of quark and lepton masses Rare K decays in a model of quark and lepton masses

2001-08-14

arxiv.org/abs/hep-ph/0108119v2

Phys.Rev. D65 (2002) 054035

Physics

High Energy Physics

High Energy Physics - Phenomenology

34 pages, 10 figures, corrected some typos in the introduction

Scientific paper

10.1103/PhysRevD.65.054035

An extension of a model of neutrino masses to the quark sector provides an interesting link between these two sectors. A parameter which is important to describe neutrino oscillations and masses is found to be a crucial one appearing in various ``penguin'' operators, in particular the so-called Z penguin. This parameter is severely constrained by the rare decay process $K_{L} \to \mu^{+} \mu^{-}$. This in turn has interesting implications on the decay rates of other rare processes such as $K_{L} \to \mu e$, etc..., as well as on the masses of the neutrinos and the masses of the vector-like quarks and leptons which appear in our model.

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