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Advances in High Energy Physics
Volume 2014 (2014), Article ID 702343, 7 pages
http://dx.doi.org/10.1155/2014/702343
Research Article

Big Bang Nucleosynthesis in Visible and Hidden-Mirror Sectors

Web Institute of Physics, Via Fortore 3, 65015 Montesilvano, Italy

Received 31 October 2013; Accepted 7 January 2014; Published 26 February 2014

Academic Editor: Maxim Khlopov

Copyright © 2014 Paolo Ciarcelluti. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.

Abstract

One of the still viable candidates for the dark matter is the so-called mirror matter. Its cosmological and astrophysical implications were widely studied, pointing out the importance to go further with research. In particular, the Big Bang nucleosynthesis provides a strong test for every dark matter candidate, since it is well studied and involves relatively few free parameters. The necessity of accurate studies of primordial nucleosynthesis with mirror matter has then emerged. I present here the results of accurate numerical simulations of the primordial production of both ordinary nuclides and nuclides made of mirror baryons, in presence of a hidden mirror sector with unbroken parity symmetry and with gravitational interactions only. These elements are the building blocks of all the structures forming in the Universe; therefore, their chemical composition is a key ingredient for astrophysics with mirror dark matter. The production of ordinary nuclides shows differences from the standard model for a ratio of the temperatures between mirror and ordinary sectors , and they present an interesting decrease of the abundance of . For the mirror nuclides, instead, one observes an enhanced production of , which becomes the dominant element for , and much larger abundances of heavier elements.