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T: Fachverband Teilchenphysik
T 33: Neutrino physics 4
T 33.7: Vortrag
Dienstag, 5. März 2024, 17:30–17:45, Geb. 30.21: Gerthsen-HS
Search for the DSNB in JUNO: Development of new Methods for Background Event Identification — •Matthias Mayer1, Lothar Oberauer1, Hans Steiger1,2, Simon Basten1, David Dörflinger1, Ulrike Fahrendholz1, Meishu Lu1, Vincent Rompel1, Konstantin Schweizer1, Luca Schweizer1, Korbinian Stangler1, and Raphael Stock1 — 1Physik-Department, TU München, James-Frank-Str. 1, 85748 Garching b. München, Deutschland — 2PRISMA+ Cluster of Excellence, Staudingerweg 9, 55128 Mainz, Deutschland
The diffuse supernova neutrino background (DSNB) describes the constant flux of neutrinos from past core-collapse supernovae over the 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 νe sources will cause irreducible IBD background, we plan to reduce non-IBD backgrounds such as neutron-induced events and NC interactions of atmospheric neutrinos by careful pulse-shape discrimination (PSD). In this talk, I compare the performance of different PSD techniques in the prospect of increasing the fiducial volume available for the DSNB search with an outlook into the energy dependence of the neutron flourescence time profile in the JUNO scintillator and a look into our recent publication regarding the DSNB detection potential. This work has been supported by the Clusters of Excellence PRISMA+ and ORIGINS as well as the DFG Collaborative Research Center "NDM" (SFB1258) and the DFG Research Units 2319 and 5519.
Keywords: DSNB; Liquid Scintillator; JUNO