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Journal Article

Non-thermal Leptogenesis after Majoron Hilltop Inflation


Antusch,  Stefan
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Marschall,  Kenneth
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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Antusch, S., & Marschall, K. (2018). Non-thermal Leptogenesis after Majoron Hilltop Inflation. Journal of Cosmology and Astroparticle Physics, (1805), 015. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2018-328.

Cite as: https://hdl.handle.net/21.11116/0000-0003-F889-B
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.