Results 61 to 70 of about 5,564 (231)
Physics Letters B, 2003 13 pages, 5 figures, uses axodraw ...
D'Ambrosio, Giancarlo +2 more
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Parameter space of leptogenesis in polynomial inflation [PDF]
Journal of Cosmology and Astroparticle PhysicsPolynomial inflation is a very simple and well motivated scenario. A potential with a concave “almost” saddle point at field value ϕ = ϕ 0 fits well the cosmic microwave background (CMB) data and makes testable predictions for the running of the spectral
Manuel Drees, Yong Xu
semanticscholar +1 more source
Bremsstrahlung high-frequency gravitational wave signatures of high-scale nonthermal leptogenesis [PDF]
Physical Review D, 2022 Inflaton seeds non-thermal leptogenesis by pair producing right-handed neutrinos in the seesaw model. We show that the inevitable graviton bremsstrahlung associated with inflaton decay can be a unique probe of non-thermal leptogenesis.
A. Ghoshal, R. Samanta, G. White
semanticscholar +1 more source
Mirror Dirac leptogenesis [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 We consider a mirror world scenario, in which light Dirac neutrinos are generated from a seesaw mechanism and leptogenesis occurs at high scale without violating lepton number. After leptogenesis, the conservation laws of the theory imply the visible baryon-minus-lepton asymmetry to be equal to the mirror baryon-minus-lepton asymmetry.
Earl, Kevin +3 more
openaire +2 more sources
Universe, 2018 We review scenarios of baryogenesis through leptogenesis at early epochs of the universe, in string-inspired minimal extensions of the Standard Model (SM), involving heavy right-handed Majorana neutrinos.
Nick E. Mavromatos, Sarben Sarkar
doaj +1 more source
Large neutrino asymmetry from TeV scale leptogenesis [PDF]
Physical Review D, 2022 We study a class of leptogenesis scenarios with decay or scattering being the source of lepton asymmetry, which can not only give rise to the observed baryon asymmetry in the universe but also can leave behind a large remnant neutrino asymmetry.
D. Borah, A. Dasgupta
semanticscholar +1 more source
Leptogenesis for pedestrians [PDF]
Annals of Physics, 2005 During the process of thermal leptogenesis temperature decreases by about one order of magnitude while the baryon asymmetry is generated. We present an analytical description of this process so that the dependence on the neutrino mass parameters becomes transparent.
Buchmuller, Wilfried +2 more
openaire +4 more sources
Advances in High Energy Physics, 2012 Leptogenesis is a class of scenarios in which the cosmic baryon asymmetry originates from an initial lepton asymmetry generated in the decays of heavy sterile neutrinos in the early Universe.
Chee Sheng Fong +2 more
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Mapping the Viable Parameter Space for Testable Leptogenesis. [PDF]
Physical Review Letters, 2021 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 70 TeV, covering the entire experimentally ...
M. Drewes, Y. Georis, Juraj Klari'c
semanticscholar +1 more source
Physical Review Letters, 2021 We present a new leptogenesis mechanism based on the standard type-I seesaw model that successfully operates at right-handed-neutrino masses as low as a few 100 TeV. This mechanism, which we dub 'wash-in leptogenesis', does not require any CP violation in the neutrino sector and can be implemented even in the regime of strong washout.
Domcke, Valerie +4 more
openaire +5 more sources