Results 31 to 40 of about 166 (75)
Journal of High Energy Physics, 2023 We discuss the thermal leptogenesis mechanism within the minimal gauged U 1 L μ − L τ $$ \textrm{U}{(1)}_{L_{\mu }-{L}_{\tau }} $$ model to explain the observed baryon asymmetry of the Universe (BAU).
A. Granelli +4 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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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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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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Baryo-Leptogenesis induced by modified gravities in the primordial Universe
, 2015 12 pages, 10 ...
openaire +2 more sources
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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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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Collider probes of baryogenesis with maximal CP asymmetry
Journal of High Energy PhysicsWe propose a novel collider probe of baryogenesis at TeV scale by measuring decay asymmetries into particle and anti-particle final states. Motivated by the idea of Dirac leptogenesis, we consider an extension of the standard model with new colored and ...
Debasish Borah +4 more
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Journal of High Energy PhysicsThe origin of neutrino masses can be simply attributed to a new scalar beyond the Standard Model. We demonstrate that leptogenesis can explain the baryon asymmetry of the universe already in such a minimal framework.
Shinya Kanemura, Shao-Ping Li
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