Investigating electron interacting dark matter

Abstract

Some extensions of the Standard Model provide Dark Matter candidate particles which can have a dominant coupling with the lepton sector of the ordinary matter. Thus, such Dark Matter candidate particles (${\chi }^0$) can be directly detected only through their interaction with electrons in the detectors of a suitable experiment, while they are lost by experiments based on the rejection of the electromagnetic component of the experimental counting rate. These candidates can also offer a possible source of the 511 keV photons observed from the galactic bulge. In this paper this scenario is investigated. Some theoretical arguments are developed and related phenomenological aspects are discussed. Allowed intervals and regions for the characteristic phenomenological parameters of the considered model and of the possible mediator of the interaction are also derived considering the DAMA/NaI data.

16 pages, 6 figures. Accepted for publication in PRD. One typo corrected

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Cited by in corpus (2)

• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• Interpreting the recent results on direct search for dark matter particles in terms of relic neutralino