Supersymmetry and large transition magnetic moment of the neutrino

Journal Article · Mon Apr 09 04:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.1705· OSTI ID:6901854

Babu, K S; Mohapatra, R N ^[1]

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1. Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742 (USA)

We show that the most general minimal supersymmetric standard model with {ital l}{sub {ital e}}{minus}{ital l}{sub {mu}} symmetry ({ital l}{sub {ital i}}={ital i}th lepton number) and a discrete horizontal symmetry between {ital e} and {mu} families can generate a large transition magnetic moment for the neutrino while leading to a naturally small mass. A magnetic moment of order {mu}{sub {nu}}{approx}0.3{times}10{sup {minus}10}{mu}{sub {ital B}} implies {ital m}{sub {nu}{ital e}}={ital m}{sub {nu}{mu}}{ge}1 eV. The photino, which is expected to be the lightest supersymmetric particle, is unstable in this scheme, decaying dominantly into three-lepton final states ({mu}{sup +}{bar {nu}}{sub {ital e}}{tau}{sup {minus}}, e{sup +}{bar {nu}}{sub {mu}}{tau}{sup {minus}}+charge conjugate).

• OSTI ID: 6901854
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:15; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

645202 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645203 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
LIE GROUPS
MAGNETIC MOMENTS
MASS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NEUTRINOS
PARTICLE MODELS
QUANTUM NUMBERS
STANDARD MODEL
SU GROUPS
SU-2 GROUPS
SUPERSYMMETRY
SYMMETRY
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS