Results 111 to 120 of about 5,564 (231)
Journal of Cosmology and Astroparticle Physics, 2007 It has been recently shown that the quantum Boltzmann equations may be relevant for the leptogenesis scenario. In particular, they lead to a time-dependent CP asymmetry which depends upon the previous dynamics of the system. This memory effect in the CP asymmetry is particularly important in resonant leptogenesis where the asymmetry is generated by the
De Simone, Andrea, Riotto A.
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Flavored resonant leptogenesis in the U(1)X model
Nuclear Physics BWe study the generation of baryon asymmetry through the flavored resonant leptogenesis in the U(1)X extension of the Standard Model. Being a generalization of the U(1)B-L, U(1)X is an ultraviolet-complete model of the right-handed neutrinos (RHNs), whose
Garv Chauhan
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Leptogenesis with Dirac Neutrinos [PDF]
Physical Review Letters, 2000 We describe a "neutrinogenesis" mechanism whereby, in the presence of right-handed neutrinos with sufficiently small pure Dirac masses, (B+L)-violating sphaleron processes create the baryon asymmetry of the Universe, even when B=L=0 initially. It is shown that the resulting neutrino mass constraints are easily fulfilled by the neutrino masses suggested
Dick, K, Lindner, M, Ratz, M, Wright, D
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ULYSSES, universal LeptogeneSiS equation solver: Version 2 [PDF]
Computer Physics Communications, 2023 A. Granelli +6 more
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Leptogenesis and composite heavy neutrinos with gauge-mediated interactions
European Physical Journal C: Particles and Fields, 2017 Leptogenesis is an appealing framework to account for the baryon asymmetry in the universe. To this end physics beyond the standard model is demanded. In this paper we investigate the possibility to attain successful leptogenesis with composite Majorana ...
S. Biondini, O. Panella
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Natural seesaw and leptogenesis from hybrid of high-scale type I and TeV-scale inverse
Journal of High Energy Physics, 2019 We develop an extension of the basic inverse seesaw model which addresses simultaneously two of its drawbacks, namely, the lack of explanation of the tiny Majorana mass term μ for the TeV-scale singlet fermions and the difficulty in achieving successful ...
Kaustubh Agashe +5 more
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Flavoured leptogenesis and CPμτ symmetry
Journal of High Energy Physics, 2020 We present a systematic study of leptogenesis in neutrino mass models with μτ-flavoured CP symmetry. In addition to the strong hierarchical N1-dominated scenario (N1DS) in the ‘two flavour regime’ of leptogenesis, we show that one may choose the right ...
Rome Samanta, Manibrata Sen
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Leptogenesis from a feebly interacting dark matter sector [PDF]
, 2022 Suresh Chand, Mariana Frank, P. Poulose
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Baryogenesis via flavoured leptogenesis in a minimal type-II seesaw model
Nuclear Physics BWe study baryogenesis via leptogenesis in an extension of the Standard Model by adding one right-handed neutrino and one triplet scalar. These heavy particles contribute to the generation of tiny neutrino mass through seesaw mechanism.
Sreerupa Chongdar, Sasmita Mishra
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Baryogenesis via leptonic CP-violating phase transition
Physics Letters B, 2018 We propose a new mechanism to generate a lepton asymmetry based on the vacuum CP-violating phase transition (CPPT). This approach differs from classical thermal leptogenesis as a specific seesaw model, and its UV completion, need not be specified.
Silvia Pascoli +2 more
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