Updates from the COSINE experiment
Chang Hyon Ha (on behalf of the COSINE-100 collaboration)
TL;DR
The COSINE experiment tests dark matter detection claims by DAMA using NaI(Tl) crystals, achieving significant exclusions and upgrading detectors for improved sensitivity at a new underground lab.
Contribution
This paper reports on the first phase results of COSINE-100 and details the upgrade to COSINE-100 Upgrade with higher-light-yield detectors at a deeper underground facility.
Findings
Three-sigma exclusion of DAMA modulation signal
Model-dependent WIMP search results
Progress on detector upgrade and future prospects
Abstract
The COSINE project aims to independently test the DAMA experiment's long-standing claim of detecting dark matter interactions using the same NaI(Tl) scintillating crystal technology. In its first phase, COSINE-100 collected over six years of data at the Yangyang Underground Laboratory and achieved a three-sigma exclusion of the DAMA modulation signal under standard dark matter assumptions. The experiment is now being upgraded to the COSINE-100 Upgrade, deploying higher-light-yield NaI(Tl) detectors at the new, deeper Yemilab facility to further enhance sensitivity. Here, I will discuss the model-dependent WIMP searches performed with COSINE-100 and provide an update on the ongoing upgrade effort, highlighting its future prospects for crystal-based dark matter direct detection in Korea.
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Taxonomy
TopicsDark Matter and Cosmic Phenomena · Radiation Detection and Scintillator Technologies · Particle physics theoretical and experimental studies