WMAP dark matter constraints and Yukawa unification in supergravity models with CP phases

Journal Article · Tue Nov 01 04:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.095008· OSTI ID:20713866

Gomez, Mario E ^[1]; Ibrahim, Tarek ^[2]; Nath, Pran ^[2]; Skadhauge, Solveig ^[3]

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1. Departamento de Fisica Aplicada, Facultad de Ciencias Experimentales, Universidad de Huelva, 21071 Huelva (Spain)
2. Department of Physics, Northeastern University, Boston, Massachusetts 02115-5000 (United States)
3. Instituto de Fisica, Universidade de Sao Paulo, 05315-970 Sao Paulo, SP (Brazil)

The compatibility of producing the observed amount of dark matter, as indicated by the Wilkinson Microwave Anisotropy Probe (WMAP) data, through the relic abundance of neutralinos with Yukawa unification and with the measured rate of b{yields}s{gamma} is analyzed in mSUGRA and extended SUGRA unified models with the inclusion of CP phases. The CP phases affect the analysis in several ways, e.g., through the threshold corrections to the b-quark mass, via their effects on the neutralino relic density and through the supersymmetry (SUSY) contribution to the BR(b{yields}s{gamma}) which is sensitive to the CP phases. We present some specific models with large SUSY phases, which can accommodate the fermion electric dipole moment constraints and give a neutralino relic density in agreement with observations as well as with the b-{tau} unification constraint. The possibility of achieving WMAP relic density constraints with full Yukawa unification is also explored.

• OSTI ID: 20713866
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ABUNDANCE
ANISOTROPY
B QUARKS
CORRECTIONS
CP INVARIANCE
DENSITY
ELECTRIC DIPOLE MOMENTS
NONLUMINOUS MATTER
PARTICLE DECAY
RELICT RADIATION
REST MASS
SPARTICLES
SUPERGRAVITY
SUPERSYMMETRY
UNIFIED MODEL