Experimente widerlegen Behauptung der Dunklen Materie

„In 1997, the DAMA/NaI experiment at the Gran Sasso National Laboratory in Italy observed a signal whose annual variability was suggestive of dark matter. Despite the follow-up DAMA/LIBRA experiment producing similar results, claims of direct dark matter detection drew skepticism from the physics community.

To test the claims independently, sister experiments ANAIS-112 and COSINE-100 were constructed using the same basic design as DAMA/NaI and DAMA/LIBRA. COSINE-100, located at the Yangyang Underground Laboratory in South Korea, began taking data in 2016. ANAIS-112, located at the Canfranc Underground Laboratory (LSC) in Spain, began taking data in 2017. Maruyama is the Principal Investigator (PI) and scientific co-spokesperson of COSINE-100.

All of these experiments were designed to search for the signature of a dark matter candidate scattering off the sodium iodide detector. Such a signature should contain a distinct annual modulation because the detector’s speed relative to the Milky Way’s dark matter varies as Earth orbits the sun. Observations of such modulation by DAMA/NaI and DAMA/LIBRA are inconsistent with other direct-detection experiments and with model predictions. But the reproducibility of these observations had not been tested robustly using identical techniques.“