6533b85cfe1ef96bd12bca8b
RESEARCH PRODUCT
Supersymmetry unification predictions for m(top), V(cb) and tan(beta)
Javier FerrandisJosé W. F. ValleMarco Aurelio Diazsubject
PhysicsNuclear and High Energy PhysicsParticle physicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)SuperpotentialFOS: Physical sciencesFísicaBeta (velocity)SupersymmetryFermionMinimal Supersymmetric Standard Modeldescription
We study the predictions for M_top, tan(beta) and V_cb in a popular texture ansatze for the fermion mass matrices. We do this both for the Minimal Supersymmetric Standard Model (MSSM) and for the simplest model (MSSM-BRpV) where a bilinear R-Parity violating term is added to the superpotential. We find that taking the experimental values for M_top and V_cb at 99 % C.L. and the GUT relations h_b=h_tau and (V_cb)^2=h_c/h_t within 5 %, the large tan(beta) solution, characteristic in the MSSM with bottom--tau unification, becomes disallowed. In contrast the corresponding allowed region for the MSSM-BRpV is slightly larger. We also find that important modifications occur if we relax the texture conditions at the GUT scale. For example, if the GUT relations are imposed at 40 %, the large tan(beta) branch in the MSSM becomes fully allowed. In addition, in MSSM-BRpV the whole tan(beta)-M_top plane become allowed, finding unification at any value of tan(beta).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-01-01 |