Release of the First Results on Dark Matter Annual Modulation from ANAIS-112 experiment

ANAIS experiment is taking data at the Canfranc Underground Laboratory in Spain since August 2017 aiming at testing the puzzling observation by the DAMA/LIBRA experiment of an annual modulation compatible with that expected for dark matter halo particles for about two decades.

First results on dark matter annual modulation from ANAIS-112 experiment are just released and can be found in It has been submitted to be considered for publication in Physical Review Letters.

It presents the first model independent testing of the DAMA/LIBRA result: 1.5 years from ANAIS-112 experiment, using 112.5 kg of sodium iodide as target, have been analyzed searching for modulation. Results are compatible with the absence of modulation and incompatible with DAMA/LIBRA signal at 90% C.L. Results confirm our goal of reaching a 3 sigma sensitivity in 3.5 more years of data-taking.

Before unblinding the data, the whole analysis procedure was fixed (, accepted for publication in Eur. Phys. J. C), the background thoroughly studied (, review procedure is in progress for publication in Eur. Phys. J. C) and the expected sensitivity evaluated (, accepted for publication in Eur. Phys. J. C).