Abstract
Dark matter particles with masses in the sub-GeV range have escaped severe constraints from direct detection experiments such as LUX, PANDAX-II and XENON100 as the corresponding recoil energies are, largely, lower than the detector thresholds. In a companion paper, we demonstrated, in a model independent approach, that a significantly large fraction of the parameter space escapes the cosmological and astrophysical constraints. We show here, though, that the remaining parameter space lends itself to the possibility of discovery at both direct detection experiments (such as CRESST-II) as well as in a low-energy collider such as Belle-II.
Highlights
The evidence for dark matter, at least as far as the manifestations of its gravitational interactions are concerned, has been continuously building up
The insistence on low energy might seem counterintuitive, but we explicitly show the advantage thereof by comparing with the reach that would have been possible at Large Electron Positron Collider at CERN (LEP)
We show that other complementary channels namely e−eþ → φφÃll could be very useful in confirming the production of dark matter (DM) and deciphering the tensorial structure of the couplings
Summary
The evidence for dark matter, at least as far as the manifestations of its gravitational interactions are concerned, has been continuously building up. No direct (i.e., laboratory) evidence for such DM particles has been forthcoming despite a large variety of experiments having been operative All such efforts hinge upon the assumption that the DM would have some interaction with the Standard Model (SM) particles.. Much larger room as far as the constraints from canonical experiments are concerned This as well as several other theoretical compulsions have engendered much recent interest in sub–giga electron volt DM particles [14,15,16,17,18,19,20].
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