Constraining the spin-dependent WIMP-nucleon cross sections with XENON1T. (arXiv:1902.03234v1 [astro-ph.CO])

Constraining the spin-dependent WIMP-nucleon cross sections with XENON1T. (arXiv:1902.03234v1 [astro-ph.CO])
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We report the first experimental results on spin-dependent elastic
WIMP-nucleon scattering from the XENON1T dark matter search experiment. The
analysis uses the full tonne-year exposure of XENON1T to constrain the
spin-dependent proton-only and neutron-only cases. No significant signal excess
is observed, and a profile likelihood ratio analysis is used to set exclusion
limits on the WIMP-nucleon interactions. This includes the most stringent
constraint to date on the WIMP-neutron cross section, with a minimum of
$6.3times10^{-42}$ cm$^2$ at 30 GeV/c${}^2$ and 90% confidence level. The
results are compared with those from collider searches and used to exclude new
parameter space in an isoscalar theory with an axial-vector mediator.

We report the first experimental results on spin-dependent elastic
WIMP-nucleon scattering from the XENON1T dark matter search experiment. The
analysis uses the full tonne-year exposure of XENON1T to constrain the
spin-dependent proton-only and neutron-only cases. No significant signal excess
is observed, and a profile likelihood ratio analysis is used to set exclusion
limits on the WIMP-nucleon interactions. This includes the most stringent
constraint to date on the WIMP-neutron cross section, with a minimum of
$6.3times10^{-42}$ cm$^2$ at 30 GeV/c${}^2$ and 90% confidence level. The
results are compared with those from collider searches and used to exclude new
parameter space in an isoscalar theory with an axial-vector mediator.

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