INVESTIGATING PSEUDOSCALAR AND SCALAR DARK MATTER

Author:

BERNABEI R.1,BELLI P.1,MONTECCHIA F.1,NOZZOLI F.1,CAPPELLA F.2,INCICCHITTI A.2,PROSPERI D.2,CERULLI R.3,DAI C. J.4,HE H. L.4,KUANG H. H.4,MA J. M.4,YE Z. P.4

Affiliation:

1. Dip. di Fisica, Universita' di Roma "Tor Vergata" and INFN, sez. Roma2, I-00133 Rome, Italy

2. Dip. di Fisica, Universita' di Roma "La Sapienza" and INFN, sez. Roma, I-00185 Rome, Italy

3. Laboratori Nazionali del Gran Sasso, I.N.F.N., Assergi, Italy

4. IHEP, Chinese Academy, PO Box 918/3, Beijing 100039, China

Abstract

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 setup. 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 6.3σ 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.

Publisher

World Scientific Pub Co Pte Lt

Subject

Astronomy and Astrophysics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics

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