The DAMA/LIBRA modulation signal is proposed to be a signal of dark matter annihilation. But, the ANAIS-112 experiment has failed to replicate this signal, casting doubt upon it as evidence of dark matter.
This article presents the results of the annual modulation analysis corresponding to six years of ANAIS-112 data. Our results, the most sensitive to date with the same target material, NaI(Tl), are incompatible with the DAMA/LIBRA modulation signal at a 4σ confidence level. Such a discrepancy strongly challenges the DAMA/LIBRA dark matter interpretation and highlights the need to address systematic uncertainties affecting the comparison, particularly those related to the response of detectors to nuclear recoils, which may require further characterization of the DAMA crystals.
From here.
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