Regular Article - Theoretical Physics
A4 symmetry and lepton masses and mixing
Institute for Higher Education Research and Practice, Osaka University, 1-16 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
* e-mail: email@example.com
Published online: 2 October 2007
Stimulated by Ma’s idea, which explains the tribimaximal neutrino mixing by assuming an A4 flavor symmetry, a lepton mass matrix model is investigated. A Frogatt–Nielsen-type model is assumed, and the flavor structures of the masses and mixing are caused by the VEVs of SU(2)L singlet scalars φi u and φi d (i=1,2,3), which are assigned to 3 and (1 ,1 ’,1 ”) of A4, respectively. Possible charged lepton and neutrino mass spectra and mixing are investigated.
© Springer-Verlag / Società Italiana di Fisica, 2007