Constraining the Spin-Dependent WIMP-Nucleon Cross Sections with XENON1T.
Phys Rev Lett
; 122(14): 141301, 2019 Apr 12.
Article
en En
| MEDLINE
| ID: mdl-31050482
ABSTRACT
We report the first experimental results on spin-dependent elastic weakly interacting massive particle (WIMP) nucleon scattering from the XENON1T dark matter search experiment. The analysis uses the full ton 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 6.3×10^{-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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Phys Rev Lett
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2019
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Article