Investigating pseudoscalar and scalar dark matter

Details Investigating pseudoscalar and scalar dark matter Investigating pseudoscalar and scalar dark matter

2005-11-09

arxiv.org/abs/astro-ph/0511262v1

Int.J.Mod.Phys.A21:1445-1470,2006

Astronomy and Astrophysics

Astrophysics

23 pages, 6 figures, 1 table, Int. J. Mod. Phys. A (in press)

Scientific paper

10.1142/S0217751X06030874

In this paper another class of Dark Matter candidate particles: the pseudoscalar and scalar light bosonic candidates, is discussed. Particular care is devoted to the study of the processes for their detection (which only involves electrons and photons/X-rays) in a suitable underground experimental set-up. For this purpose the needed calculations are developed and various related aspects and phenomenologies are discussed. In particular, it is shown that - in addition to the WIMP cases already discussed elsewhere - there is also possibility for a bosonic candidate to account for the 6.3 sigma C.L. model independent evidence for the presence of a particle DM component in the galactic halo observed by DAMA/NaI. Allowed regions in these scenarios are presented also paying particular care on the cosmological interest of the bosonic candidate.

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