Heidelberg 2022 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 20: Neutrino Physics without Accelerators 1
T 20.5: Vortrag
Montag, 21. März 2022, 17:25–17:40, T-H33
Event reconstruction for the neutrino mass ordering measurement of JUNO — •Mariam Rifai1,2, Livia Ludhova1,2, Philipp Kampmann3, Luca Pelicci1,2, Apeksha Singhal1,2, Alexandre Goettel1,2, Cornilius Vollbrecht1,2, Runxuan Liu1,2, and Nikhil Mohan2,3 — 1Forschungszentrum Jülich GmbH, Nuclear Physics Institute IKP-2, Jülich, Germany — 2III. Physikalisches Institut B, RWTH Aachen University, Aachen, Germany — 3GSI Helmholtz Centre for Heavy Ion Research, Darmstadt, Germany
The Jiangmen Underground Neutrino Observatory (JUNO) is a multipurpose liquid scintillator-based neutrino experiment with a target mass of 20 kt. The detector is currently under construction and plans to start the data-taking in 2023. Its main goal is the determination of the neutrino mass ordering (MO), through a measurement of the oscillation pattern of reactor neutrinos over 53 km baseline. For a successful measurement of MO with at least 3$\sigma$ in 6 years, the energy resolution of JUNO must reach an unprecedented 3% at 1 MeV, which is challenging in terms of event reconstruction. Moreover, future JUNO results about neutrino MO could be further improved via a combined analysis with atmospheric neutrinos, which can be observed and reconstructed in JUNO. To achieve this target performance, a precise knowledge of the detector's energy scale has been studied and event reconstruction methods based on charge and time information of the PMTs will be presented in this talk.