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Issue Eur. Phys. J. Special Topics
Volume 163, October I 2008
Atomic Clocks and Fundamental Constants
Page(s) 271 - 289
DOI 10.1140/epjst/e2008-00824-6
Published online 25 October 2008

Eur. Phys. J. Special Topics 163, 271-289 (2008)
DOI: 10.1140/epjst/e2008-00824-6

Unified picture of ordinary and dark matter genesis

Z. Berezhiani

Dipartimento di Fisica, Universtità di L'Aquila, 67010 Coppito (AQ), and INFN, Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy

zurab.berezhiani@aquila.infn.it

Abstract
Dark matter can be constituted by the baryons of mirror world, parallel hidden sector which has the same (or similar) microphysics as that of the observable world. We discuss a mechanism based on the B-L and CP violating out-of-equilibrium particle processes between ordinary and mirror sectors that could generate baryon asymmetries in both worlds, in comparable amounts, within the range $\Omega'_{\rm B}/\Omega_{\rm B} \sim 1\kern-2.5pt-\kern-2pt 10$, and thus naturally explain the conspiracy between the baryonic and dark matter fractions in the Universe. Particle interactions between two sectors can be also relevant for a direct detection of dark matter and in addition could induce interesting processes of the ordinary particle oscillations in their mirror partners. Cosmological implications are also discussed.



© EDP Sciences, Springer-Verlag 2008


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