Zooming in on ‘bi-large’ neutrino mixing with the first JUNO results

Abstract The leptonic mixing matrix is examined within bi-large mixing patterns and confronted with the latest results announced by the Jiangmen Underground Neutrino Observatory (JUNO). We analyze the viability of bi-large mixing schemes and assess JUNO’s ability to test neutrino mixing and discriminate among different bi-large mixing patterns, some of which are strongly disfavored when compared with neutrino oscillation global-fit results. Specific octant and CP predictions emerge. Finally, we comment on the implications of JUNO’s findings for neutrinoless double beta decay.