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Title: Cladogenesis: Baryon-dark matter coincidence from branchings in moduli decay

Abstract

We propose late-time moduli decay as the common origin of baryons and dark matter. The baryon asymmetry is produced from the decay of new TeV-scale particles, while dark matter is created from the (chain) decay of R-parity odd particles without undergoing any annihilation. The baryon and dark matter abundances are mainly controlled by the dilution factor from moduli decay, which is typically in the range 10{sup -9}-10{sup -7}. The exact number densities are determined by simple branching fractions from modulus decay, which are expected to be of similar order in the absence of symmetries. This scenario can naturally lead to the observed baryon asymmetry and, for moderate suppression of the two-body decays of the modulus to R-parity odd particles, can also yield the correct dark matter abundance for a dark matter mass in the (5-500) GeV range.

Authors:
 [1]; ;  [2]
  1. Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)
  2. Department of Physics, Texas A and M University, College Station, Texas 77843-4242 (United States)
Publication Date:
OSTI Identifier:
21541443
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 83; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevD.83.083502; (c) 2011 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANNIHILATION; ASYMMETRY; BARYONS; BRANCHING RATIO; DENSITY; DILUTION; GEV RANGE; MASS; NONLUMINOUS MATTER; PARITY; PARTICLE DECAY; SYMMETRY; TWO-BODY PROBLEM; DECAY; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRONS; INTERACTIONS; MANY-BODY PROBLEM; MATTER; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES

Citation Formats

Allahverdi, Rouzbeh, Dutta, Bhaskar, and Sinha, Kuver. Cladogenesis: Baryon-dark matter coincidence from branchings in moduli decay. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.83.083502.
Allahverdi, Rouzbeh, Dutta, Bhaskar, & Sinha, Kuver. Cladogenesis: Baryon-dark matter coincidence from branchings in moduli decay. United States. doi:10.1103/PHYSREVD.83.083502.
Allahverdi, Rouzbeh, Dutta, Bhaskar, and Sinha, Kuver. Fri . "Cladogenesis: Baryon-dark matter coincidence from branchings in moduli decay". United States. doi:10.1103/PHYSREVD.83.083502.
@article{osti_21541443,
title = {Cladogenesis: Baryon-dark matter coincidence from branchings in moduli decay},
author = {Allahverdi, Rouzbeh and Dutta, Bhaskar and Sinha, Kuver},
abstractNote = {We propose late-time moduli decay as the common origin of baryons and dark matter. The baryon asymmetry is produced from the decay of new TeV-scale particles, while dark matter is created from the (chain) decay of R-parity odd particles without undergoing any annihilation. The baryon and dark matter abundances are mainly controlled by the dilution factor from moduli decay, which is typically in the range 10{sup -9}-10{sup -7}. The exact number densities are determined by simple branching fractions from modulus decay, which are expected to be of similar order in the absence of symmetries. This scenario can naturally lead to the observed baryon asymmetry and, for moderate suppression of the two-body decays of the modulus to R-parity odd particles, can also yield the correct dark matter abundance for a dark matter mass in the (5-500) GeV range.},
doi = {10.1103/PHYSREVD.83.083502},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 8,
volume = 83,
place = {United States},
year = {2011},
month = {4}
}