Results 11 to 20 of about 5,564 (231)
ALP leptogenesis: non-thermal right-handed neutrinos from axions [PDF]
Journal of High Energy PhysicsWe propose a novel realisation of leptogenesis that relies on the out-of-equilibrium decay of an axion-like particle (ALP) into right-handed Majorana neutrinos (RHNs) in the early Universe.
Martina Cataldi +3 more
doaj +2 more sources
Linear Seesaw in A5′ Modular Symmetry With Leptogenesis
Frontiers in Physics, 2022 In this study, we investigate the implication of modular Γ5′≃A5′ symmetry on neutrino oscillation phenomenology in the linear seesaw framework. In order to achieve the well-defined mass structure for the light active neutrinos as dictated by the linear ...
Mitesh Kumar Behera, Rukmani Mohanta
doaj +2 more sources
Tomography of flavoured leptogenesis with primordial blue gravitational waves
Journal of Cosmology and Astroparticle PhysicsWe explore a scenario where an early epoch of matter domination is driven by the mass scale MN of the right-handed neutrinos, which also characterizes the different flavour regimes of leptogenesis.
Marco Chianese +3 more
openalex +2 more sources
Wash-in leptogenesis after axion inflation [PDF]
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
doaj +2 more sources
Journal of High Energy PhysicsWe investigate a class of leptogenesis scenarios in which the sector containing the lightest right-handed neutrino establishes kinetic equilibrium at a temperature T N 1 $$ {T}_{N_1} $$ > T SM, where T SM is the temperature of the Standard Model sector ...
Michael J. Baker +3 more
doaj +3 more sources
Scale of Dirac leptogenesis and left-right symmetry in the light of recent PTA results [PDF]
Journal of Cosmology and Astroparticle Physics, 2023 Motivated by the recent release of new results from five different pulsar timing array (PTA) experiments claiming to have found compelling evidence for primordial gravitational waves (GW) at nano-Hz frequencies, we study the consequences for two popular ...
Basabendu Barman +3 more
semanticscholar +1 more source
Limits on light primordial black holes from high-scale leptogenesis [PDF]
Physical Review D, 2023 We investigate the role that the evaporation of light primordial black holes may have played in the production of the baryon asymmetry of the Universe through the high-scale leptogenesis. In particular, for mass of primordial black hole in the range [$10^
R. Calabrese +5 more
semanticscholar +1 more source
Impact of primordial black holes on heavy neutral leptons searches in the framework of resonant leptogenesis [PDF]
Physical Review D, 2023 We investigate the effects on sub-TeV resonant leptogenesis of Primordial Black Holes with masses from $10^6$ to $\sim 10^9$ g. The latter might dominate the energy content of the Universe altering its evolution and, eventually, diluting the final baryon
R. Calabrese +5 more
semanticscholar +1 more source
Accommodating muon (g − 2) and leptogenesis in a scotogenic model [PDF]
Journal of High Energy Physics, 2023 We present a detailed study of a scotogenic model accommodating dark matter, neutrino masses and the anomalous magnetic moment of the muon while being consistent with the existing constraints on flavour violating decays of the leptons.
A. Alvarez +6 more
semanticscholar +1 more source
Testing Dirac leptogenesis with the cosmic microwave background and proton decay [PDF]
Physical Review D, 2023 The nature of neutrino masses and the matter-antimatter asymmetry of our universe are two of the most important open problems in particle physics today and are notoriously difficult to test with current technology.
J. Heeck, J. Heisig, Anil Thapa
semanticscholar +1 more source