Constraining the spin-dependent WIMP-nucleon cross sections with XENON1T

(XENON Collaboration)

Research output: Contribution to journalArticle


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 cm2 at 30 GeV/c2 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.

Original languageEnglish (US)
Article number140506
JournalPhysical Review Letters
Issue number14
StatePublished - Apr 8 2019


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this