  In the last decade direct detection Dark Matter (DM) experiments have
increased enormously their sensitivity and ton-scale setups have been proposed,
especially using germanium and xenon targets with double readout and background
discrimination capabilities. In light of this situation, we study the prospects
for determining the parameters of Weakly Interacting Massive Particle (WIMP) DM
(mass, spin-dependent (SD) and spin-independent (SI) cross section off
nucleons) by combining the results of such experiments in the case of a
hypothetical detection. In general, the degeneracy between the SD and SI
components of the scattering cross section can only be removed using targets
with different sensitivities to these components. Scintillating bolometers,
with particle discrimination capability, very good energy resolution and
threshold and a wide choice of target materials, are an excellent tool for a
multitarget complementary DM search. We investigate how the simultaneous use of
scintillating targets with different SD-SI sensitivities and/or light isotopes
(as the case of CaF2 and NaI) significantly improves the determination of the
WIMP parameters. In order to make the analysis more realistic we include the
effect of uncertainties in the halo model and in the spin-dependent nuclear
structure functions, as well as the effect of a thermal quenching different
from 1.
