A DAMA/Libra-phase2 analysis in terms of WIMP-quark and WIMP-gluon
  effective interactions up to dimension seven
  We analyze the DAMA/Libra-phase2 modulation result using a basis of 16
effective operators describing the WIMP interaction with photons, gluons and
quarks up to mass dimension seven. For each operator we fix the effective
theory at the scale of 2 GeV and parametrize WIMP-quark interactions in terms
of two independent couplings for up-type and down-type quarks. We discuss the
connection with the non-relativistic limit of the effective theory in terms of
operators invariant by Galilean transformations, and the impact of the ensuing
momentum-dependent Wilson coefficients due to long-range interactions or light
meson poles. Most relativistic operators yield a good fit of the DAMA
modulation effect, although for parameters excluded by the constraints from
XENON1T and PICO60.
