First results on sub-GeV spin-dependent dark matter interactions with $$^{}$$Li
arXiv: Instrumentation and Methods for Astrophysics(2019)
摘要
In this work, we want to highlight the potential of lithium as a target for spin-dependent dark matter search in cryogenic experiments, with a special focus on the low-mass region of the parameter space. We operated a prototype detector module based on a
$$\hbox {Li}_2\hbox {MoO}_4$$
target crystal in an above-ground laboratory. Despite the high background environment, the detector sets a competitive limit on spin-dependent interactions of dark matter particles with protons and neutrons for masses between
$$0.8~\hbox {GeV/c}^2$$
and
$$1.5~\hbox {GeV/c}^2$$
.
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