K^L_{mu3} decay: A Stringent Test of Right-Handed Quark Currents
High Energy Physics - Phenomenology
2010-11-05 v2 High Energy Physics - Experiment
Abstract
Clean tests of a small admixture of right-handed quark currents directly coupled to the standard W are still lacking. We show that such non-standard couplings can be significantly constrained measuring the value of the scalar Kpi form factor at the Callan-Treiman point to a few percent. A realistic prospect of such a measurement in K^L_{mu3} decay based on an accurate dispersive representation of the scalar form factor is presented. The inadequacy of the currently used linear parametrisation is explained and illustrated using recent KTeV data. We briefly comment on the charged Kaon mode.
Keywords
Cite
@article{arxiv.hep-ph/0603202,
title = {K^L_{mu3} decay: A Stringent Test of Right-Handed Quark Currents},
author = {Véronique Bernard and Micaela Oertel and Emilie Passemar and Jan Stern},
journal= {arXiv preprint arXiv:hep-ph/0603202},
year = {2010}
}
Comments
15 pp, 3 eps figs, Comment on the charged Kaon mode and few refs added