Large Lepton Mixing in a Coset-space Family Unification on $E_7/SU(5) \times U(1)^3$
Preprint
- 29 October 1997
Abstract
We study a coset-space unification model for families based on $E_7/SU(5) \times U(1)^3$. We find that qualitative structure of quark and lepton mass matrices in this model describes very well the observation. We stress, in particular, that the large mixing angle, $\sin^22\theta_{\nu_\mu\nu_\tau} \simeq 1$, required for the atmospheric neutrino oscillation reported by the SuperKamiokande collaboration, is naturally obtained, which is a consequence of unparallel family structure in the present coset-space unification.
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All Related Versions
- Version 1, 1997-10-29, ArXiv
- Published version: Physics Letters B, 430 (1-2), 127.
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