Speaker
Description
The event rate from dark matter interactions is expected to exhibit an annual modulation due to the galactic halo distribution of dark matter. However, this signature has only been observed in the DAMA/LIBRA experiment, which used NaI(Tl) scintillators. While their results could suggest dark matter scattering, no other experiment has successfully replicated these findings. To address this anomaly, the COSINE-100 experiment was established as a direct, model-independent test of the DAMA result, utilizing 106 kg of the same NaI(Tl) material. Operating from September 2016 to March 2023 at the Y2L underground laboratory in South Korea, COSINE-100 has collected high-quality data to rigorously test DAMA’s claims. This presentation will cover the recent model-independent annual modulation search results from the full COSINE-100 dataset. Additionally, various other physics searches conducted by COSINE-100 will be discussed. Having completed its initial mission phase last year, COSINE-100 is now undergoing upgrades to transition into COSINE-100U. With its new, deeper location at Yemilab and improved encapsulation techniques, the experiment will continue its dark matter search efforts. The talk will also outline the status and prospects of the upgrade program, along with plans for the next-generation experiment, COSINE-200.
