Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 20: Neutrino Physics without Accelerators 1

T 20.3: Vortrag

Montag, 21. März 2022, 16:50–17:05, T-H33

Analysis of possible implications by the finestructure in the reactor neutrino spectrum on the JUNO NMO sensitivity — •Tobias Heinz, Lukas Bieger, David Blum, Marc Breisch, Srijan Delampady, Jessica Eck, Gina Grünauer, Benedict Kaiser, Frieder Kohler, Tobias Lachenmaier, Axel Müller, Tobias Sterr, Alexander Tietzsch, and Jan Züfle — Eberhard Karls Universität Tübingen, Physikalisches Institut

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kt liquid scintillator detector currently constructed in southern China with the main goal to determine the neutrino mass ordering (NMO). Therefore, JUNO measures the reactor neutrino spectrum from two nuclear power plants located in a distance of around 53 km. The precise knowledge of the emitted reactor neutrino spectrum is one of the major aspects for the NMO determination. In recent years, new calculations of the spectrum predicted the existence of a spectral finestructure which could impede the measurement with the unprecedented energy resolution of the JUNO detector.

This talk will discuss possibilities to study the implications of the still unknown finestructure in the reactor neutrino spectrum for the sensitivity of the mass hierarchy determination with JUNO. Further, some preliminary results of these sensitivity studies will be presented.

This work is supported by the Deutsche Forschungsgemeinschaft.