TY  - JOUR
AU  - Pato, M.
AU  - Baudis, L.
AU  - Bertone, G.
AU  - Ruiz de Austri, R.
AU  - Strigari, L. E.
AU  - Trotta, R.
PY  - 2011
DA  - 2011//
TI  - Complementarity of dark matter direct detection targets
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 083505
EP  - 11pp
VL  - 83
IS  - 8
PB  - Amer Physical Soc
AB  - We investigate the reconstruction capabilities of the dark matter mass and spin-independent cross section from future ton-scale direct detection experiments using germanium, xenon, or argon as targets. Adopting realistic values for the exposure, energy threshold, and resolution of dark matter experiments which will come online within 5 to 10 years, the degree of complementarity between different targets is quantified. We investigate how the uncertainty in the astrophysical parameters controlling the local dark matter density and velocity distribution affects the reconstruction. For a 50 GeV WIMP, astrophysical uncertainties degrade the accuracy in the mass reconstruction by up to a factor of similar to 4 for xenon and germanium, compared to the case when astrophysical quantities are fixed. However, the combination of argon, germanium, and xenon data increases the constraining power by a factor of similar to 2 compared to germanium or xenon alone. We show that future direct detection experiments can achieve self-calibration of some astrophysical parameters, and they will be able to constrain the WIMP mass with only very weak external astrophysical constraints.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1012.3458
UR  - https://doi.org/10.1103/PhysRevD.83.083505
DO  - 10.1103/PhysRevD.83.083505
LA  - English
N1  - ISI:000289353200003
ID  - Pato_etal2011
ER  -