Small Steps Towards a Grand Unification and the Electron/Positron Excesses in Cosmic-Ray Experiments Metadata
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Title
- Main Title Small Steps Towards a Grand Unification and the Electron/Positron Excesses in Cosmic-Ray Experiments
Creator
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Author: Ibe, MasahiroCreator Type: PersonalCreator Info: Stanford Linear Accelerator Center, Menlo park, CA 94025, USA
Contributor
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Sponsor: Theoretical PhysicsContributor Type: Organization
Publisher
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Name: SLAC National Accelerator LaboratoryPlace of Publication: [California]
Date
- Creation: 2010-06-11
Language
- English
Description
- Content Description: We consider a small extension of the standard model by adding two Majorana fermions; those are adjoint representations of the SU(2){sub L} and SU(3){sub c} gauge groups of the standard model. In this extension, the gauge coupling unification at an energy scale higher than 10{sup 15} GeV is realized when the masses of the triplet and the octet fermions are smaller than 10{sup 4} GeV and 10{sup 12} GeV, respectively. We also show that an appropriate symmetry ensures a long lifetime of the neutral component of the triplet fermion whose thermal relic density naturally explains the observed dark matter density. The electron/positron excesses observed in recent cosmic-ray experiments can be also explained by the decay of the triplet fermion.
- Physical Description: 11 pages
Subject
- Keyword: Decay
- Keyword: Grand Unified Theory
- Keyword: Symmetry
- Keyword: Nonluminous Matter
- STI Subject Categories: 71 Classical And Quantum Mechanics, General Physics
- Keyword: Fermions
- STI Subject Categories: 72 Physics Of Elementary Particles And Fields
- Keyword: Phenomenology-Hep,Other
- Keyword: Lifetime
- Keyword: Triplets Phenomenology-Hep,Other
- Keyword: Standard Model
Source
- Journal Name: JHEP 0908:086,2009; Journal Volume: 09; Journal Issue: 08
Collection
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Name: Office of Scientific & Technical Information Technical ReportsCode: OSTI
Institution
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Name: UNT Libraries Government Documents DepartmentCode: UNTGD
Resource Type
- Article
Format
- Text
Identifier
- Report No.: SLAC-PUB-13689
- Grant Number: AC02-76SF00515
- Office of Scientific & Technical Information Report Number: 981676
- Archival Resource Key: ark:/67531/metadc1014921
Note
- Display Note: http://www-public.slac.stanford.edu/SciDoc/docMeta.aspx?slacPubNumber=slac-pub-13689