# New Koide paper, for CarlB

1. Mar 23, 2008

### marcus

http://arxiv.org/abs/0803.3101
Empirical Neutrino Mass Matrix Related to Up-Quark Masses
Yoshio Koide
12 pages, 2 figures
(Submitted on 21 Mar 2008)

"A new approach to quark and lepton masses is proposed: the mass spectra originate in vacuum expectation values of U(3) flavor nonet (gauge singlet) scalars. As an offshoot of this approach, we find an empirical neutrino mass matrix which is described in terms of the up-quark and charged lepton masses and which leads to a nearly tribimaximal mixing without assuming any discrete symmetry."

Just posted. Enjoy

2. Mar 24, 2008

### arivero

One general question is, if you only have the top mass, how do you seesaw?