TY - JOUR
T1 - Leptogenesis from additional Higgs doublets
AU - Garbrecht, Björn
PY - 2012/6/4
Y1 - 2012/6/4
N2 - Leptogenesis may be induced by the mixing of extra Higgs doublets with experimentally accessible masses. This mechanism relies on diagrammatic cuts that are kinematically forbidden in the vacuum but contribute at finite temperature. A resonant enhancement of the asymmetry occurs generically provided the dimensionless Yukawa and self-interactions are suppressed compared to those of the standard model Higgs field. This is in contrast to typical scenarios of resonant leptogenesis, where the asymmetry is enhanced by imposing a degeneracy of singlet neutrino masses.
AB - Leptogenesis may be induced by the mixing of extra Higgs doublets with experimentally accessible masses. This mechanism relies on diagrammatic cuts that are kinematically forbidden in the vacuum but contribute at finite temperature. A resonant enhancement of the asymmetry occurs generically provided the dimensionless Yukawa and self-interactions are suppressed compared to those of the standard model Higgs field. This is in contrast to typical scenarios of resonant leptogenesis, where the asymmetry is enhanced by imposing a degeneracy of singlet neutrino masses.
UR - http://www.scopus.com/inward/record.url?scp=84862297255&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.85.123509
DO - 10.1103/PhysRevD.85.123509
M3 - Article
AN - SCOPUS:84862297255
SN - 1550-7998
VL - 85
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 12
M1 - 123509
ER -