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arXiv · 1009.5865

Supersymmetric leptogenesis and light hidden sectors

Christoph Weniger
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Abstract

Thermal leptogenesis and supergravity are attractive scenarios for physics beyond the standard model. However, it is well known that the super-weak interaction of the gravitino often leads to problems with primordial nucleosynthesis in the standard scenario of matter parity conserving MSSM + three right-handed neutrinos. We will present and compare two related solutions to these problems: 1) The conflict between BBN and leptogenesis can be avoided in presence of a hidden sector with light supersymmetric particles which open new decay channels for the dangerous long-lived particles. 2) If there is a condensate in the hidden sector, such additional decay channels can be alternatively opened by dynamical breaking of matter parity in the hidden sector.

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Christoph Weniger. 2010-09-29. Supersymmetric leptogenesis and light hidden sectors. https://doi.org/10.1088/1742-6596%2F259%2F1%2F012075

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