# Baryogenesis in theories with large extra spatial dimensions

Allahverdi, Rouzbeh and Enqvist, Kari and Mazumdar, Anupam and Pérez-Lorenzana, Abdel (2001) Baryogenesis in theories with large extra spatial dimensions. Nuclear Physics B, 618 (1-2). pp. 277-300. ISSN 0550-3213

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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 $U(1)_{\chi}$ charge which is dynamically broken after the end of inflation. This generates an excess of $\chi$ over $\bar \chi$, 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.

Item Type: Journal Article Nuclear Physics B LaTeX file, 24 pages, no figures /dk/atira/pure/subjectarea/asjc/3100/3106 Faculty of Science and Technology > Physics 63480 ep_importer_pure 03 May 2013 09:21 Yes Published 15 Jan 2020 07:36 https://eprints.lancs.ac.uk/id/eprint/63480