Yukawa unification and neutralino dark matter in SU(4){sub c}xSU(2){sub L}xSU(2){sub R}
- Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States)
We consider a left-right symmetric SU(4){sub c}xSU(2){sub L}xSU(2){sub R} (4-2-2) model with gravity mediated supersymmetry breaking. We find that with 4-2-2 compatible nonuniversal gaugino masses, t-b-{tau} Yukawa coupling unification is consistent with neutralino dark matter abundance and with constraints from collider experiments (except (g-2){sub {mu}}). The gluino mass lies close to that of the lightest neutralino, so that the gluino coannihilation channel plays an important role in determining the neutralino relic abundance. By relaxing the Yukawa unification constraint we find stau and stop masses as low as 200-220 GeV. We highlight some benchmark points for these cases with 40{<=}tan{beta}{<=}58.
- OSTI ID:
- 21300876
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 79, Issue 11; Other Information: DOI: 10.1103/PhysRevD.79.115004; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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