6533b83afe1ef96bd12a6fa2
RESEARCH PRODUCT
Electroweak baryogenesis window in non standard cosmologies
Javier RaseroGabriela Barenboimsubject
PhysicsNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::PhenomenologyElectroweak interactionFOS: Physical sciencesCosmologyStandard ModelBaryogenesisHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Baryon asymmetryHiggs bosonNeutrinoMinimal Supersymmetric Standard Modeldescription
In this work we show that the new bounds on the Higgs mass are more than difficult to reconcile with the strong constraints on the physical parameters of the Standard Model and the Minimal Supersymmetric Standard Model imposed by the preservation of the baryon asymmetry. This bound can be weakened by assuming a nonstandard cosmology at the time of the electroweak phase transition, reverting back to standard cosmology by BBN time. Two explicit examples are an early period of matter dominated expansion due to a heavy right handed neutrino (see-saw scale), or a nonstandard braneworld expansion.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-02-27 | Journal of High Energy Physics |