Leptogenesis: beyond the minimal type I seesaw scenario

Hambye, Thomas

doi:10.1088/1367-2630/14/12/125014

Leptogenesis: beyond the minimal type I seesaw scenario

Thomas Hambye
(
- Brussels U. and
- Madrid, IFT
)

Dec, 2012

42 pages

Published in:

New J.Phys. 14 (2012) 125014

e-Print:

1212.2888 [hep-ph]

DOI:

10.1088/1367-2630/14/12/125014

Report number:

ULB-TH-12-13

View in:

ADS Abstract Service

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Abstract: (arXiv)

Numerous recent evidences for neutrino masses have established the leptogenesis mechanism as a very natural possible explanation for the baryon asymmetry of the Universe. The explicit realization of this mechanism depends on the neutrino mass model considered. If the right-handed type-I seesaw model of neutrino masses is certainly the most straightforward, it is not the only natural one, especially in the framework of explicit GUT realizations of the seesaw. In this review we discuss in detail the various seesaw scenarios that can implement the leptogenesis mechanism successfully, beyond the paradigm of the pure standard type-I seesaw model. This includes scenarios based on the existence of scalar triplets (type-II), of fermion triplets (type-III) as well as mixed seesaw frameworks.

Note:

42 pages, 13 figures, invited review chapter for the "Focus on the Origin of Matter" issue published in the New Journal of Physics (It is likely that non-seesaw leptogenesis scenarios will be also discussed in this review in a subsequent arXiv version)

neutrino: mass
baryon: asymmetry
seesaw model
fermion: triplet
leptogenesis
grand unified theory
neutrino: right-handed

References(156)

Figures(14)

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