Three Dirac neutrinos

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.44.R22· OSTI ID:5609365

Joshipura, A S; Rindani, S D ^[1]

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1. Theory Group, Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India (IN)

The consequences of imposing an exact {ital L}{sub {ital e}}+{ital L}{sub {tau}}{minus}{ital L}{sub {mu}} symmetry on a 6{times}6 matrix describing neutrino masses are discussed. The presence of right-handed neutrinos avoids the need of introducing any SU(2) Higgs triplet. Hence the conflict with the CERN LEP data on the {ital Z} width found in earlier models with {ital L}{sub {ital e}}+{ital L}{sub {tau}}{minus}{ital L}{sub {mu}} symmetry is avoided. The {ital L}{sub {ital e}}+{ital L}{sub {tau}}{minus}{ital L}{sub {mu}} symmetry provides an interesting realization of a recent proposal of Glashow to accommodate the 17-keV Dirac neutrino in the SU(2){times}U(1) theory. All the neutrinos in this model are Dirac particles. The solar-neutrino problem can be solved in an extension of the model which generates a large ({similar to}10{sup {minus}11}{mu}{sub {ital B}}) magnetic moment for the electron neutrino.

• OSTI ID: 5609365
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 44:1; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ELEMENTARY PARTICLES
FERMIONS
HIGGS BOSONS
LEPTON NUMBER
LEPTONS
LIE GROUPS
MAGNETIC MOMENTS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NEUTRINOS
PARTICLE MODELS
POSTULATED PARTICLES
STANDARD MODEL
SU GROUPS
SYMMETRY GROUPS
UNIFIED GAUGE MODELS