SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 38: Neutrinos, Dark Matter V
T 38.5: Vortrag
Dienstag, 21. März 2023, 18:00–18:15, HSZ/0002
Search for the DSNB in JUNO: Development of new Methods for Background Event Identification — •Matthias Mayer1, Lothar Oberauer1, Raphael Stock1, Hans Steiger2, Konstantin Schweizer1, Ulrike Fahrendholz1, David Dörflinger1, Simon Appel1, Carsten Dittrich1, Korbinian Stangler1, Simon Csakli1, and Florian Kübelbäck1 — 1Technische Universität München, München, Germany — 2Institute of Physics and EC PRISMA+, Johannes Gutenberg Universität Mainz, Mainz, Germany
The diffuse supernova neutrino background (DSNB) describes the constant flux of neutrinos from past core-collapse supernovae over the entire visible universe. The Jiangmen Underground Neutrino Observatory (JUNO), a 20 kton liquid scintillator detector, plans to detect the DSNB in the inverse beta decay (IBD) detection channel. While other electron anti-neutrino sources will cause irreducible IBD background, non-IBD backgrounds such as neutron-induced events and NC interactions of atmospheric neutrinos can be reduced by careful pulse-shape discrimination (PSD). In this talk, I compare the performance of different PSD techniques with the prospect of increasing the fiducial volume available for the DSNB search. Additionally, I discuss the influence of possible quenching of non-IBD pulseshapes on the available discrimination performance in the DSNB energy region of interest. This work is supported by the DFG research unit "JUNO", the DFG collaborative research centre 1258 "NDM", and the DFG Cluster of Excellence "Origins".