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Baryogenesis in theories with large extra spatial dimensions

Rouzbeh Allahverdi·Kari Enqvist·Anupam Mazumdar·Abdel Pérez-Lorenzana
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Abstract

We describe a simple and predictive scenario for baryogenesis in theories with large extra dimensions which resembles Affleck-Dine baryogenesis. The Affleck-Dine field is a complex scalar field carrying a $U(1)_χ$ charge which is dynamically broken after the end of inflation. This generates an excess of $χ$ over $\bar χ$, which then decays into Standard Model fermions to produce an excess of baryons over anti-baryons. Our model is very constrained because the Affleck-Dine field has to be sufficiently flat during inflation. It is also a source for density fluctuations which can be tested in the coming satellite and balloon experiments.

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Rouzbeh Allahverdi, Kari Enqvist, Anupam Mazumdar, Abdel Pérez-Lorenzana. 2001-08-27. Baryogenesis in theories with large extra spatial dimensions. https://doi.org/10.1016/s0550-3213(01)00474-6

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