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T: Fachverband Teilchenphysik

T 44: Neutrino physics without accelerators V

T 44.6: Vortrag

Dienstag, 16. März 2021, 17:20–17:35, Ts

Implications of a fine structure in the reactor neutrino spectrum for JUNO — David Blum, Lukas Bieger, Marc Breisch, Jessica Eck, •Tobias Heinz, Benedict Kaiser, Frieder Kohler, Tobias Lachenmaier, Axel Müller, Tobias Sterr, Alexander Tietzsch, and Jan Züfle — Physikalisches Institut, Eberhard Karls Universität Tübingen

With the main goal to determine the neutrino mass hierarchy, the Jiangmen Underground Neutrino Observatory (JUNO) is currently constructed in the Guangdong province in southern China. To determine which mass hierarchy is realized in nature, JUNO measures the reactor neutrino spectrum from two nuclear power plants located in a distance of around 53 km. One crucial aspect is the precise knowledge of the emitted reactor neutrino spectrum. In the last years, new predictions of the spectrum revealed the possible existence of a spectral fine structure which can only be observed with the unprecedented energy resolution the JUNO detector will have. This talk will present studies on possible implications of the fine structure in the reactor neutrino spectrum for the sensitivity of the mass hierarchy determination with JUNO. This work is supported by the Deutsche Forschungsgemeinschaft.