TY  - JOUR
AU  - Davidson, S.
AU  - Felipe, R. G.
AU  - Serodio, H.
AU  - Silva, J. P.
PY  - 2013
DA  - 2013//
TI  - Baryogenesis through split Higgsogenesis
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 100
EP  - 22pp
VL  - 11
IS  - 11
PB  - Springer
KW  - Higgs Physics
KW  - CP violation
AB  - We study the cosmological evolution of asymmetries in the two-Higgs doublet extension of the Standard Model, prior to the electroweak phase transition. If Higgs flavour-exchanging interactions are sufficiently slow, then a relative asymmetry among the Higgs doublets corresponds to an effectively conserved quantum number. Since the magnitude of the Higgs couplings depends on the choice of basis in the :Higgs doublet space, we attempt to formulate basis-independent out-of-equilibrium conditions. We show that an initial asymmetry between the fliggs scalars, which could be generated by GP violation in the :Higgs sector, will be transformed into a baryon asymmetry by the sphalerons, without the need of B – L violation. This novel mechanism of baryogenesis through (split) Higgsogenesis is exemplified with simple scenarios based on the out-of-equilibrium decay of heavy singlet scalar fields into the illiggs doublets.
SN  - 1029-8479
UR  - http://arxiv.org/abs/arXiv:1307.6218
UR  - https://doi.org/10.1007/JHEP11(2013)100
DO  - 10.1007/JHEP11(2013)100
LA  - English
N1  - WOS:000327092700006
ID  - Davidson_etal2013
ER  -