Naturally small Dirac neutrino masses in supergravity

Journal Article · Tue Feb 01 00:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.033003· OSTI ID:20705915

Abel, Steven; Dedes, Athanasios ^[1]; Tamvakis, Kyriakos ^[2]

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1. Institute for Particle Physics Phenomenology (IPPP), Durham DH1 3LE (United Kingdom)
2. Physics Department, University of Ioannina, GR 451 10, Ioannina (Greece)

We show that Dirac neutrino masses of the right size can arise from the Kaehler potential of supergravity. They are proportional to the supersymmetry and the electroweak breaking scales. We find that they have the experimentally observed value provided that the ultraviolet cutoff of the Minimal Supersymmetric Standard Model is between the Grand Unification scale and the heterotic string scale. If lepton number is not conserved, then relatively suppressed Majorana masses can also be present, resulting in pseudo-Dirac neutrino masses.

• OSTI ID: 20705915
• Journal Information: Physical Review. D, Particles Fields, Vol. 71, Issue 3; Other Information: DOI: 10.1103/PhysRevD.71.033003; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
LEPTON NUMBER
NEUTRINOS
POTENTIALS
REST MASS
STANDARD MODEL
SUPERGRAVITY
SUPERSYMMETRY
ULTRAVIOLET RADIATION