Lepton Universality Test of Extra Leptons using Hadron Decay
High Energy Physics - Phenomenology
2014-04-18 v1
Abstract
We study the flavor universality of the lepton couplings with the W and Z bosons. Currently, it is constrained by the electroweak precision observables. We focus on the leptonic decay of the pion. It is shown that the decay is expected to have a comparable or better sensitivity to the lepton-flavor universality in the near future. Furthermore, it provides a complementary information in determining the Wlnu couplings without assuming new physics models. This result is applied to a model of the extra lepton.
Cite
@article{arxiv.1404.4498,
title = {Lepton Universality Test of Extra Leptons using Hadron Decay},
author = {Motoi Endo and Takahiro Yoshinaga},
journal= {arXiv preprint arXiv:1404.4498},
year = {2014}
}
Comments
12 pages, 1 figure