We report the results of a search for the inelastic scattering of weakly interacting massive particles (WIMPs) in the XENON1T dark matter experiment. Scattering off 129 Xe is the most sensitive probe of inelastic WIMP interactions, with a signature of a 39.6 keV deexcitation photon detected simultaneously with the nuclear recoil. Using an exposure of 0.83 tonne-years, we find no evidence of inelastic WIMP scattering with a significance of more than 2 σ . A profile-likelihood ratio analysis is used to set upper limits on the cross section of WIMP-nucleus interactions. We exclude new parameter space for WIMPs heavier than 100     GeV / c 2 , with the strongest upper limit of 3.3 × 10 − 39     cm 2 for 130     GeV / c 2 WIMPs at 90% confidence level.

Search for inelastic scattering of WIMP dark matter in XENON1T

Agostini F.;Di Giovanni A.;Messina M.;Molinario A.;Selvi M.;Weinheimer C.;
2021-01-01

Abstract

We report the results of a search for the inelastic scattering of weakly interacting massive particles (WIMPs) in the XENON1T dark matter experiment. Scattering off 129 Xe is the most sensitive probe of inelastic WIMP interactions, with a signature of a 39.6 keV deexcitation photon detected simultaneously with the nuclear recoil. Using an exposure of 0.83 tonne-years, we find no evidence of inelastic WIMP scattering with a significance of more than 2 σ . A profile-likelihood ratio analysis is used to set upper limits on the cross section of WIMP-nucleus interactions. We exclude new parameter space for WIMPs heavier than 100     GeV / c 2 , with the strongest upper limit of 3.3 × 10 − 39     cm 2 for 130     GeV / c 2 WIMPs at 90% confidence level.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12571/24611
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