Non-thermal leptogenesis after Majoron hilltop inflation

Antusch, Stefan and Marschall, Kenneth. (2018) Non-thermal leptogenesis after Majoron hilltop inflation. Journal of Cosmology and Astroparticle Physics (JCAP) (5). 015.

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Official URL: https://edoc.unibas.ch/67305/

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We analyse non-thermal leptogenesis after models of Majoron hilltop inflation, where the scalar field that provides masses for the right-handed neutrinos and sneutrinos via its vacuum expectation value acts as the inflaton. We discuss different realisations of Majoron inflation models with different hilltop shapes and couplings to the right-handed (s)neutrinos. To study the non-thermally produced baryon asymmetry in these models, we numerically solve the relevant Boltzmann equations. In contrast to previous studies, we include the effects from resonant sneutrino particle production during preheating. We find that these effects can result in an enhancement of the produced baryon asymmetry by more than an order of magnitude. This can significantly change the favoured parameter regions of these models.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Antusch)
UniBasel Contributors:Antusch, Stefan and Marschall, Kenneth
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:IOP Publishing
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:06 Feb 2019 13:14
Deposited On:06 Feb 2019 13:14

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