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arxiv: 1508.03676 · v2 · submitted 2015-08-14 · ✦ hep-ph

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Leptogenesis in GeV scale seesaw models

P. Hern\'andez , M.Kekic , J. L\'opez-Pav\'on , J. Racker , N. Rius
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classification ✦ hep-ph
keywords massesasymmetriesneutrinoscaleactive-sterileallowsanalyticalanalytically
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We revisit the production of leptonic asymmetries in minimal extensions of the Standard Model that can explain neutrino masses, involving extra singlets with Majorana masses in the GeV scale. We study the quantum kinetic equations both analytically, via a perturbative expansion up to third order in the mixing angles, and numerically. The analytical solution allows us to identify the relevant CP invariants, and simplifies the exploration of the parameter space. We find that sizeable lepton asymmetries are compatible with non-degenerate neutrino masses and measurable active-sterile mixings.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Low-Scale Leptogenesis from Resonant Thermal Lepton Flavour Coherences

    hep-ph 2026-04 unverdicted novelty 7.0

    Resonant thermal lepton-flavour coherences at two loops enable dominant low-scale leptogenesis for both Dirac and Majorana singlet neutrinos down to GeV masses without mass degeneracy.