JUNO Oscillation Physics

TL;DR

JUNO is a large underground neutrino detector aiming to determine neutrino mass ordering and measure oscillation parameters with high precision through reactor, atmospheric, and solar neutrino observations.

Contribution

This paper details JUNO's design, capabilities, and expected impact on neutrino oscillation physics, highlighting its potential for groundbreaking measurements.

Findings

JUNO can determine neutrino mass ordering at 3-4σ significance.

It will measure key oscillation parameters with better than 0.6% precision.

The detector will provide complementary data from atmospheric and solar neutrinos.

Abstract

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton multi-purpose liquid scintillator detector with an expected $3\%/\sqrt{E[\mbox{Mev}]}$ energy resolution, under construction in a 700 m underground laboratory in the south of China (Jiangmen city, Guangdong province). The exceptional energy resolution and the massive fiducial volume of the JUNO detector offer great opportunities for addressing many essential topics in neutrino and astroparticle physics. JUNO's primary goals are to determine the neutrino mass ordering and precisely measure the related neutrino oscillation parameters. With six years of data taking with reactor antineutrinos, JUNO can determine the mass ordering at a 3-4$\sigma$ significance and the neutrino oscillation parameters $\sin^2\theta_{12}$, $\Delta m^2_{21}$, and $|\Delta m^2_{31}|$ to a precision of better than 0.6\%. In addition, the atmospheric neutrino and solar neutrino measurement at JUNO can also provide complementary and important information for neutrino oscillation physics. This work focuses on the oscillation physics of JUNO, which includes measurement and analysis of the reactor neutrinos, the atmospheric neutrinos, and the solar neutrinos. With the delicate energy response calibration and event reconstruction potential, JUNO will make a world-leading measurement on the neutrino oscillation parameters and neutrino mass ordering in the near future.