Flavour issues in leptogenesis
By A. Abada, S. Davidson, F. Josse-Michaux, M. Losada, A. Riotto. 2006
375 citations recorded by the source corpus.
We study the impact of flavour in thermal leptogenesis, including the quantum oscillations of the asymmetries in lepton flavour space. In the Boltzmann equations we find different numerical factors and additional terms which can affect the results significantly. For degenerate light neutrinos, the upper bound on the CP asymmetry in a specific flavour is weaker than the bound on the sum. For hierarchical right-handed neutrinos—when flavour dynamics is included—there is no model-independent limit on the light neutrino mass scale, and the lower bound on the reheat temperature is relaxed by a factor of ∼(3–10).
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/4b841eeb4f0a0ad6fbd74ee88eca7615eb573279
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In Nuclear and High Energy Physics
Citations in the corpus
- Leptogenesis in the Universe (2012, background): “[68, 69, 70] they had been included in leptogenesis studies only in a few cases [71, 72, 73, 74, 75].”
- Baryogenesis from the weak scale to the grand unification scale (2020, background): “In general, flavor effects can have an important impact on leptogenesis (Barbieri et al., 2000; Endoh et al., 2004; Abada et al., 2006; Nardi et al., 2006b; Blanchet et al., 2007).”
- Flavour matters in leptogenesis (2006, background): “As in [13], we continue to neglect the non-resonant contribution to ∆L = 2 scatterings, and its associated flavour effects [8].”
- The Phenomenology of Right Handed Neutrinos (2013, background): “ intermediate regime between these two cases, there is no full decoherence. In this case flavour oscillations have to be taken into account. This is usually done by density matrix equations [398], see [369, 372] for early applications to leptogenesis. These are matrix valued generalizations of the ra”
- Leptogenesis (2008, neutral): “(See [46] for a discussion including these oscillations).”