Comments on a Flavor Symmetry
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
It is pointed out that if a flavor symmetry (a discrete symmetry, a U(1) symmetry, and so on) exists, we cannot obtain the observed CKM quark mixing matrix V_q and MNS lepton mixing matrix U_\ell, even if we can obtain reasonable mass spectra under the symmetry. Such the serious constraint is derived only from the SU(2)_L conditions, and we will not assume any explicit flavor symmetry and/or any explicit mass matrix forms. And then, we will discuss the meaning of the severe constraint.
Cite
@article{arxiv.hep-ph/0408126,
title = {Comments on a Flavor Symmetry},
author = {Yoshio Koide},
journal= {arXiv preprint arXiv:hep-ph/0408126},
year = {2007}
}
Comments
2 pages, talk at theYITP Workshop 2004 "Progress in Particle Physics"