Dark matter detection with polarized detectors

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Dark matter detection with polarized detectors

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Title: Dark matter detection with polarized detectors
Author: Chiang, Chi-Ting
Abstract: We consider the prospects to use polarized dark-matter detectors to discriminate between various dark-matter models. If WIMPs are fermions and participate in parity-violating interactions with ordinary matter, then the recoil-direction and recoil-energy distributions of nuclei in detectors will depend on the orientation of the initial nuclear spin with respect to the velocity of the detector through the Galactic halo. If, however, WIMPS are scalars, the only possible polarization-dependent interactions are extremely velocity-suppressed and, therefore, unobservable. Since the amplitude of this polarization modulation is fixed by the detector speed through the halo, in units of the speed of light, exposures several times larger than those of current experiments will be required to be probe this effect.
Department: Astronomy
Subject: Cosmology Dark matter detection
URI: http://hdl.handle.net/2152/ETD-UT-2012-08-6106
Date: 2012-08

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