PT Journal
AU Barenboim, G
   Rasero, J
TI Electroweak baryogenesis window in non standard cosmologies
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2012
BP 028
EP 20pp
VL 07
IS 7
DI 10.1007/JHEP07(2012)028
LA English
DE Cosmology of Theories beyond the SM; Beyond Standard Model; Neutrino Physics
AB 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.
ER