Published September 16, 2004
| Version v1
Journal article
δT/T and neutrino masses in SU(5)
Creators
- 1. Bartol Research Institute, University of Delaware, Newark, DE 19716 (United States)
Description
We implement inflation in a supersymmetric SU(5) model with U(1) R-symmetry such that the cosmic microwave anisotropy δT/T is proportional to (M/MPlanck)2, where M∼MGUT=2-3x1016GeV, the SU(5) breaking scale, and MPlanck=2.4x1019GeV. The presence of a global U(1)X symmetry, spontaneously broken also at scale MGUT, provides an upper bound MGUT2/MPlanck∼1014GeV on the masses of SU(5) singlet right-handed neutrinos, which explains the mass scale associated with atmospheric neutrino oscillations. The SU(5) monopoles and U(1)X cosmic strings are inflated away. Although the doublet-triplet splitting requires fine-tuning, the MSSM μ problem is resolved and dimension five proton decay is strongly suppressed
Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2004.07.030;
- arXiv
- arXiv:hep-ph/0404168v3;
- PII
- S0370-2693(04)01067-6;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 597
- Journal Issue
- 3-4
- Journal Page Range
- p. 321-327
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37062096
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANISOTROPY; MASS; NEUTRINO OSCILLATION; NEUTRINOS; PARTICLE DECAY; PROTONS; RELICT RADIATION; SU-5 GROUPS; SUPERSYMMETRY; TRIPLETS; U-1 GROUPS
- Descriptors DEC
- BARYONS; DECAY; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; FERMIONS; HADRONS; LEPTONS; LIE GROUPS; MASSLESS PARTICLES; MICROWAVE RADIATION; MULTIPLETS; NUCLEONS; RADIATIONS; SU GROUPS; SYMMETRY; SYMMETRY GROUPS; U GROUPS
Optional Information
- Copyright
- Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.