simultaneously satisfy all the requirements of the signature has been found. The experiment has also obtained and published many results on other processes and approaches. Skepticism Negative results from the XENON Dark Matter Search Experiment seem to contradict DAMA/Nal's results. The COSINE-100 collaboration has been working in Korea towards confirming or refuting the DAMA-signal. They are using a similar experimental setup to DAMA (NaI(Tl)-crystals). They published their results in December 2018 in the journal Nature; their conclusion was that their "result rules out WIMP–nucleon interactions as the cause of the annual modulation observed by the DAMA collaboration". A possible explanation of the reported modulation was pointed out as originating from the data analysis procedure. A yearly subtraction of the constant component can give rise to a sawtooth residual in the presence of a slower time dependence. New support for this hypothesis came in August 2022 when COSINE-100 applied an analysis method similar to one used by DAMA/LIBRA and found a similar annual modulation suggesting the signal could be just an statistical artifact. In May 2021, the ANAIS dark matter direct detection experiment, after acquiring data for 3 years at the Canfranc Underground Laboratory in Spain, has not seen evidence for annual modulation in 112.5 kg of NaI(Tl) crystals and is thus incompatible with DAMA/NaI and DAMA/LIBRA and in November new results from COSINE-100 experiment after 1.7 years of data collection also failed to replicate the signal of DAMA. Follow-up DAMA/NaI has been replaced by the new generation experiment, DAMA/LIBRA. These experiments are carried out by Italian and Chinese researchers. References External links The DAMA Project Experiments for dark matter search