Electromagnetic properties of the neutrino in N = 1 minimal supergravity model

Thesis/Dissertation · Mon Jan 01 04:00:00 EST 1990

OSTI ID:7235265

Ng, Ka Lok

The complete one-loop supersymmetric (SUSY) correction to the magnetic moment (NMM) of a Dirac neutrino is calculated with allowance for mixing between the scalar leptons and for mixing between the W-gaugino and Higgs fermions. The author thoroughly studies the dependence of NMM on the SUSY parameters. The SUSY contribution to the NMM can be a few times less than or comparable to the value of the standard model (with a right-handed neutrino singlet added). The SUSY correction to the NMM increases with decreasing {beta} value (tan {beta} = {l angle}H{sub 2}{r angle}/{l angle}H{sub 1}{r angle}), and is not very sensitive to the charge scalar lepton mass. The contribution from the charged Higgs loop is negligible. Within the framework of the N = 1 Minimal Supergravity model, he investigates the SUSY effects on the charge radius of a neutrino. The SUSY contributions to the neutrino charge radius (NCR) of a neutrino are calculated within Sirlin's on-shell renormalization scheme. He shows that the SUSY contribution is a finite and gauge independent quantity. The effects of the extended Higgs sector, the gaugino-higgsino sector, and the squark-slepton sector are studied. He thoroughly studies the dependence of the NCR on SUSY parameters. He has obtained numerical results that can be used to put constraints on the SUSY parameters.

• Research Organization: Vanderbilt Univ., Nashville, TN (United States)
• OSTI ID: 7235265
• Country of Publication: United States
• Language: English

Related Subjects

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662390 -- Electromagnetic Processes & Properties-- (1992-)
662430 -- Properties of Leptons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CONFIGURATION MIXING
CORRECTIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HIGGS MODEL
INTERACTIONS
LEPTONS
MAGNETIC MOMENTS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NEUTRINOS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE RADII
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
RENORMALIZATION
STANDARD MODEL
SUPERGRAVITY
SUPERSYMMETRY
SYMMETRY
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES