NEW SIGNATURES IN DIRECT DARK MATTERSEARCHES

摘要

The event rates for direct cold dark matter detection, both directional and nondirectional, are presented using a velocity didtribution function obtained byconsidering a coupling between dark matter and dark energy. The magnitudeof the effect depends on the strength a of this new interaction relative to gravity.The resulting isothermal velocity distribution for dark matter in galaxy halos isstill Maxwell-Boltzmann (M-B), but the characteristic velocity and the escapevelocity are increased by (1 + k~2)~(1/2).We adopt a phenomenological approach andconsider values of a near unity. The phenomenological implications of such acoupling are discussed