Constraining Dark Matter Models with a Light Mediator from PandaX-II Experiment.
2018
We search for nuclear recoil signals of
dark mattermodels with a light mediator in
PandaX-II, a direct detection experiment in
China Jinping underground Laboratory. Using data collected in 2016 and 2017 runs, corresponding to a total exposure of 54 ton day, we set upper limits on the zero-momentum
dark matter-nucleon cross section. These limits have a strong dependence on the mediator mass when it is comparable to or below the typical
momentum transfer. We apply our results to constrain
self-interacting dark mattermodels with a light mediator mixing with standard model particles, and set strong limits on the model parameter space for the
dark mattermass ranging from $5~{\rm GeV}$ to $10~{\rm TeV}$.
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Correction
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