Neutrino mixing and leptogenesis in type-II seesaw scenarios with left–right symmetry

Chao, Wei; Luo, Shu; Zhang, Xing

doi:10.1016/j.physletb.2007.11.028

Cited by 16 publications

(8 citation statements)

References 59 publications

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“…Since this mechanism necessarily involves lepton number violation, and allows for new CP violating phases, it is interesting to examine it as a possible source of leptogenesis [111,249,254,[267][268][269][270][271][272][273][274][275][276][277][278][279][280][281]. One obvious problem in this scenario is that, unlike singlet fermions, the triplet scalars have gauge interactions that keep them close to thermal equilibrium at temperatures T 10 15 GeV.…”

Section: Triplet Scalar Leptogenesismentioning

confidence: 99%

Leptogenesis

2008

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Leptogenesis is a class of scenarios where the baryon asymmetry of the Universe is produced from a lepton asymmetry generated in the decays of a heavy sterile neutrino. We explain the motivation for leptogenesis. We review the basic mechanism, and describe subclasses of models. We then focus on recent developments in the understanding of leptogenesis: finite temperature effects, spectator processes, and in particular the significance of flavor physics.Comment: 111 pages, 8 figures. Added Sect. 3 on anomalous B+L violation. Corrected equations (6.30) and (6.31). Added Sect. 9.1 with a simple example of the effects of flavours. Revised Sect. 10.1 on susy leptogenesis. Added several references, and other minor improvements. To be published in Physics Report

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Section: Triplet Scalar Leptogenesismentioning

confidence: 99%

Leptogenesis

2008

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“…Here too since the associated one-loop diagram is non-resonant one cannot go below this value. For various studies of the type-I + II leptogenesis frameworks, including within the context of specific flavor models, see [38,80,[112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128][129][130][131]. A study of flavor effects in the type-I + type-II model producing the asymmetry from the right-handed neutrino decays (i.e.…”

Section: The Type-i + Type-ii Model: Decay Of a Right-handed Neutrinomentioning

confidence: 99%

“…For various leptogenesis studies in the frameworks of left-right models, see [122][123][124][125][126][127]149]. Similarly for S O (10), see [128][129][130]150].…”

Section: Implications For Left-right Symmetric and S O(10) Modelsmentioning

confidence: 99%

Leptogenesis: beyond the minimal type I seesaw scenario

Hambye

2012

New J. Phys.

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Recent evidence for neutrino masses has 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 paper, we review 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.

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“…One may explicitly break the FL symmetry of L FL to make realistic predictions for both neutrino masses and flavor mixing angles. So far some interesting works have been done to apply the FL symmetry to the Majorana neutrino mass operator [10,11,12], to combine the FL symmetry with the seesaw mechanism [13,14], to extend the FL symmetry to the quark sector [15,16], and to generalize the FL symmetry in a specific model containing some scalar fields [17].…”

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confidence: 99%

Generic Friedberg-Lee symmetry of Dirac neutrinos

Luo

Zhang

2008

Phys. Rev. D

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We write out the generic Dirac neutrino mass operator which possesses the Friedberg-Lee (FL) symmetry and find that its corresponding neutrino mass matrix is asymmetric. Following a simple way to break the FL symmetry, we calculate the neutrino mass eigenvalues and show that the resultant neutrino mixing pattern is nearly tri-bimaximal. Imposing the Hermitian condition on the neutrino mass matrix, we also show that the simplified ansatz is consistent with current experimental data and favors the normal neutrino mass hierarchy.

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Neutrino mixing and leptogenesis in type-II seesaw scenarios with left–right symmetry

Cited by 16 publications

References 59 publications

Leptogenesis

Leptogenesis

Leptogenesis: beyond the minimal type I seesaw scenario

Generic Friedberg-Lee symmetry of Dirac neutrinos

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