Pattern of neutrino mixing in grand unified theories
It was found previously in SO(10) grand unified theories that if the neutrinos have a Dirac mass and a right-handed Majorana mass (approx. 10/sup 15/GeV) but no left-handed Majorana mass, there is small ..nu../sub e/ mixing but ..nu../sub ..mu../ - ..nu../sub tau/ mixing can be substantial. This problem is reexamined on the basis of a formalism that assumes that the up, down, lepton, and neutrino mass matrices arise from a single complex 10 and a single 126 Higgs boson. This formalism determines the Majorana mass matrix in terms of quark mass matrices. Adopting three different sets of quark mass matrices that produce acceptable fermion mass ratios and Cabbibo mixing produces results consistent with the above; however, in the optimum case, ..nu../sub e/ - ..nu../sub ..mu../ mixing can be of the order of the Cabbibo angle.
- Research Organization:
- Ohio State Univ., Columbus (USA). Dept. of Physics
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76ER01545
- OSTI ID:
- 6292645
- Report Number(s):
- DOE/ER/01545-309; ON: DE81029034; TRN: 81-015706
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NEUTRINOS
MASS
MIXING RATIO
UNIFIED GAUGE MODELS
MAJORANA THEORY
QUARKS
SO GROUPS
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
LIE GROUPS
MASSLESS PARTICLES
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
SYMMETRY GROUPS
645400* - High Energy Physics- Field Theory