Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 104: Neutrino Astronomy V

T 104.5: Talk

Friday, March 20, 2026, 10:00–10:15, KS H C

Background estimation for CC-Supernova neutrino searches in JUNO — •Tobias Kramer, Thilo Birkenfeld, Achim Stahl, and Christopher Wiebusch — III. Physikalisches Institut B, RWTH Aachen

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kt liquid scintillator detector, which started data taking in August 2025. Its large target mass is well-suited for Core-Collapse Supernova (CC-SN) neutrino detection. Our goal is to identify individual CC-SN bursts up to nearby extragalactic distances, since galactic CC-SNe are rare events; the only CC-SN observed via neutrinos was almost 40 years ago in 1987. The search for distant CC-SNe requires optimized background suppression in the relevant supernova neutrino energy range, where the main detection channel is the inverse beta decay (IBD). In this talk, a general strategy for background estimation and suppression, and its impact on the distant CC-SNe search in JUNO, is discussed.

Keywords: JUNO; Supernova; Background