Astrophysics independent bounds on the annual modulation of dark matter signals
Abstract
We show how constraints on the time integrated event rate from a given dark matter (DM) direct detection experiment can be used to set a stringent constraint on the amplitude of the annual modulation signal in another experiment. The method requires only very mild assumptions about the properties of the local DM distribution: that it is temporally stable on the scale of months and spatially homogeneous on the ecliptic. We apply the method to the annual modulation signal in DAMA/LIBRA, which we compare to the bounds derived from the constraints on the time-averaged rates from XENON10, XENON100, CDMS and SIMPLE. Assuming a DM mass of 10 GeV, we show that a DM interpretation of the DAMA/LIBRA signal is excluded at 6.3sigma (4.6sigma) for isospin conserving (violating) spin-independent interactions, and at 4.9sigma for spin-dependent interactions on protons.
Keywords
Cite
@article{arxiv.1205.0134,
title = {Astrophysics independent bounds on the annual modulation of dark matter signals},
author = {Juan Herrero-Garcia and Thomas Schwetz and Jure Zupan},
journal= {arXiv preprint arXiv:1205.0134},
year = {2013}
}
Comments
4 pages, 4 figures