Feb 18 – 26, 2021
Online
Europe/Rome timezone

Neutrino mass ordering determination through a combined JUNO and KM3NeT/ORCA analysis

Feb 25, 2021, 12:10 PM
5m
Room 2 (https://unipd.link/NeuTel-ParallelRoom2)

Room 2

https://unipd.link/NeuTel-ParallelRoom2

Parallel Flash talk Neutrino Telescopes and Multimessenger Astrophysical Models

Speaker

Nhan Chau (APC laboratory)

Description

The neutrino mass ordering (NMO) is one of the fundamental questions in neutrino physics. KM3NeT/ORCA and JUNO are two neutrino oscillation experiments both aiming at measuring the NMO with different approaches: ORCA with atmospheric neutrinos transversing matter/Earth and JUNO with reactor neutrinos. This talk presents the potential of determining the NMO through a combined analysis of JUNO and ORCA data. In a joint fit, the NMO sensitivity is enhanced beyond the simple sum of the sensitivities of each experiment due to the tension between their $\Delta m_{31}^2$ best fit in a wrong ordering assumption. From this analysis, we expect to determine the true NMO with $5~\sigma$ significance after $1~-~2$ years of data taking by both experiments for the current global best-fit values of the oscillation parameters, while maximally 6 years will be needed for any other parameter set.

Collaboration name KM3NeT

Primary author

Nhan Chau (APC laboratory)

Co-authors

Veronique Van Elewyck (APC & Université Paris Diderot) Antoine Kouchner (APC - University parsi Diderot) Dr João Pedro Athayde Marcondes de André (IPHC/IN2P3/CNRS) Leonidas Kalousis (IPHC) Marcos Dracos (IPHC, Université de Strasbourg, CNRS/IN2P3)

Presentation materials