Rare K decays in a model of quark and lepton masses

Abstract

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.

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

References in corpus (5)

• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• Observation of Direct CP Violation in K_{S,L} to ππDecays
• A new measurement of direct CP violation in two pion decays of the neutral kaon
• Phenomenology of non-standard Z couplings in exclusive semileptonic b -> s transitions
• A Model of Quark and Lepton Masses I: The Neutrino Sector

Cited by in corpus (1)

• Waiting for Precise Measurements of K^+->pi^+ nu nu and K_L->pi^0 nu nu