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Mapping the viable parameter space for testable leptogenesis

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arxiv 2106.16226 v1 pith:IECKUVPN submitted 2021-06-30 hep-ph

Mapping the viable parameter space for testable leptogenesis

classification hep-ph
keywords heavyleptogenesisneutrinosrangeanglesfirstlargemasses
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We for the first time map the range of active-sterile neutrino mixing angles in which leptogenesis is possible in the type I seesaw model with three heavy neutrinos with Majorana masses between 50 MeV and 100 TeV, covering the entire experimentally accessible mass range. Our study includes both,the asymmetry generation during freeze-in (ARS mechanism) and freeze-out (resonant leptotenesis) of the heavy neutrinos. The range of mixings for which leptogenesis is feasible is considerably larger than in the minimal model with only two heavy neutrinos and extends all the way up to the current experimental bounds. For such large mixing angles the HL-LHC could potentially observe a number of events that is large enough to compare different decay channels, a first step towards testing the hypothesis that these particles may be responsible for the origin of matter and neutrino masses.

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Cited by 6 Pith papers

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

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

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    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.

  3. Dominant Thermal Resonant Mechanism for Low-Scale Leptogenesis

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    Thermal Resonant Leptogenesis produces the observed baryon asymmetry via a dominant thermal channel from Higgs decays and lepton-doublet coherences, without requiring quasi-degenerate sterile neutrinos.

  4. New Particles at the Z-Pole: Tera-Z factories as discovery and precision machines

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  5. Probing Dynamical Inverse Seesaw with Low-frequency Gravitational Waves

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  6. ULYSSES the Third: An Odyssey Towards a Unified Python Toolkit for Leptogenesis

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    ULYSSES v3 extends an open-source Python toolkit to numerically solve leptogenesis equations in resonant low-scale and high-scale regimes with updated interfaces and cross-checks.