SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 142: Neutrinos, Dark Matter XI

T 142.1: Vortrag

Donnerstag, 23. März 2023, 17:30–17:45, HSZ/0003

The finestructure in the reactor antineutrino spectrum and its implications on the JUNO NMO sensitivity — •Tobias Heinz, Lukas Bieger, Marc Breisch, Jessica Eck, Benedict Kaiser, Tobias Lachenmaier, and Tobias Sterr — Eberhard Karls Universität Tübingen, Physikalisches Institut

To determine the neutrino mass ordering (NMO) with the Jiangmen Underground Neutrino Observatory (JUNO) a precise knowledge of the antineutrino spectrum emitted by nuclear reactors is crucial. New model predictions of the reactor antineutrino spectra show the possible existence of a finestructure in the spectrum that has not been measured yet which can have an impact on the sensitivity of the NMO determination using a detector of unprecedented energy resolution of 3% @ 1 MeV like JUNO. This talk will focus on the study of those implications on the NMO sensitivity of JUNO as well as on the possibility to reduce this impact by measuring an unoscillated reactor antineutrino spectrum with high energy resolution by JUNO's satellite detector TAO as a reference.

This work is supported by the Deutsche Forschungsgemeinschaft.