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

  • Author: Ibe, Masahiro
    Creator Type: Personal
    Creator Info: Stanford Linear Accelerator Center, Menlo park, CA 94025, USA

Contributor

  • Sponsor: Theoretical Physics
    Contributor Type: Organization

Publisher

  • Name: SLAC National Accelerator Laboratory
    Place 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

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: 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
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