Search for inelastic WIMP-iodine scattering with COSINE-100

Abstract

We report the results of a search for inelastic scattering of weakly interacting massive particles (WIMPs) off ${}^{127}$I nuclei using NaI(Tl) crystals with a data exposure of 97.7 kg$\cdot$years from the COSINE-100 experiment. The signature of inelastic WIMP-${}^{127}$I scattering is a nuclear recoil accompanied by a 57.6 keV $\gamma$-ray from the prompt deexcitation, producing a more energetic signal compared to the typical WIMP nuclear recoil signal. We found no evidence for this inelastic scattering signature and set a 90 $\%$ confidence level upper limit on the WIMP-proton spin-dependent, inelastic scattering cross section of $1.2\times 10^{-37}\mathrm{c}{\mathrm{m}}^2$ at the WIMP mass 500 $GeV/{\mathrm{c}}^2$.

8 pages, 5 figures. arXiv admin note: text overlap with arXiv:2104.03537

References in corpus (16)

• A direct empirical proof of the existence of dark matter
• First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment
• The RAVE Survey: Constraining the Local Galactic Escape Speed
• First Dark Matter Search with Nuclear Recoils from the XENONnT Experiment
• Dark Matter and Collider Phenomenology of Universal Extra Dimensions
• Search for dark matter at colliders
• Indirect dark matter searches in Gamma- and Cosmic Rays
• Germanium response to sub-keV nuclear recoils: a multipronged experimental characterization
• Strong constraints from COSINE-100 on the DAMA dark matter results using the same sodium iodide target
• Direct measurement of the ionization quenching factor of nuclear recoils in germanium in the keV energy range
• Calibration of the liquid argon ionization response to low energy electronic and nuclear recoils with DarkSide-50
• Search for inelastic scattering of WIMP dark matter in XENON1T
• Measurement of low energy ionization signals from Compton scattering in a CCD dark matter detector
• Performance of an ultra-pure NaI(Tl) detector produced by an indigenously-developed purification method and crystal growth for the COSINE-200 experiment
• Sensitivities for coherent elastic scattering of solar and supernova neutrinos with future NaI(Tl) dark matter search detectors of COSINE-200/1T
• Two natural scenarios for dark matter particles coexisting with supersymmetry

Cited by in corpus (2)

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