Results 31 to 40 of about 162 (74)
Thermal leptogenesis in SO(10) × U(1) A SUSY GUT
Journal of High Energy PhysicsWe investigate thermal leptogenesis within a supersymmetric grand unified theory (SUSY GUT) based on the SO(10) × U(1) A symmetry, where both the doublet-triplet splitting problem and the unrealistic Yukawa relations are resolved under the natural ...
Nobuhiro Maekawa +2 more
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Lepto-axiogenesis and the scale of supersymmetry
Journal of High Energy Physics, 2023 If the Peccei-Quinn field containing the QCD axion undergoes rotations in the early universe, the dimension-five operator responsible for neutrino masses can generate a lepton asymmetry that ultimately gives rise to the observed baryon asymmetry of the ...
Patrick Barnes +3 more
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Electroweak triplet scalar contribution to SO(10) leptogenesis
Journal of High Energy PhysicsWe show that electroweak triplet scalar can significantly impact baryogenesis via leptogenesis in concrete and predictive SO(10) GUTs, even when light neutrino masses arise predominantly from the type-I seesaw mechanism.
Chee Sheng Fong, Ketan M. Patel
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Freeze-in leptogenesis with sterile neutrino self-interactions
Journal of High Energy PhysicsSterile neutrinos are a simple yet compelling addition to the Standard Model. For right-handed neutrinos with masses below the electroweak scale, leptogenesis can proceed through CP-violating oscillations of the sterile neutrinos. This is known as ARS or
María Dias Astros, Stefan Vogl
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Predicting the baryon asymmetry with degenerate right-handed neutrinos
Journal of High Energy Physics, 2023 We consider the generation of a baryon asymmetry in an extension of the Standard Model with two singlet Majorana fermions that are degenerate above the electroweak phase transition.
S. Sandner +3 more
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Resummation and cancellation of the VIA source in electroweak baryogenesis
Journal of High Energy Physics, 2022 We re-derive the vev-insertion approximation (VIA) source in electroweak baryogenesis. In contrast to the original derivation, we rely solely on 1-particle-irreducible self-energy diagrams.
Marieke Postma +2 more
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Wash-in leptogenesis after axion inflation
Journal of High Energy Physics, 2023 CP violation and the violation of baryon-minus-lepton number B−L do not necessarily have to occur simultaneously in order to accomplish successful leptogenesis.
Valerie Domcke +4 more
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Baryo-Leptogenesis induced by modified gravities in the primordial Universe
, 2015 12 pages, 10 ...
openaire +2 more sources
A predictive and testable unified theory of fermion masses, mixing and leptogenesis
Journal of High Energy Physics, 2022 We consider a minimal non-supersymmetric SO(10) Grand Unified Theory (GUT) model that can reproduce the observed fermionic masses and mixing parameters of the Standard Model.
Bowen Fu +5 more
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Magnetic helicity, magnetic monopoles, and Higgs winding
Journal of High Energy PhysicsChanges in magnetic helicity are often discussed across a variety of fields, from condensed matter physics to early universe cosmology. It is frequently stated that the helicity change is given by the integral of the gauge field strength tensor and its ...
Hajime Fukuda +4 more
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