Cladogenesis: Baryon-dark matter coincidence from branchings in moduli decay
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)
- Department of Physics, Texas A and M University, College Station, Texas 77843-4242 (United States)
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.
- OSTI ID:
- 21541443
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 83, Issue 8; Other Information: DOI: 10.1103/PhysRevD.83.083502; (c) 2011 American Institute of Physics; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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