Atmospheric neutrinos in JUNO

This paper explores the JUNO sensitivities to the neutrino mass hierarchy by use of the atmospheric neutrinos. Here we conservatively use the atmospheric nu(mu) and nu(mu) charged current events with the muon track length L-mu > 5 m for the physical analysis. It is found that the JUNO's mass hierarchy sensitivity will reach 0.9 a for a 200 kton-years exposure, which is complementary to the JUNO reactor antineutrino results. According to the optimistic estimation, atmospheric neutrinos in JUNO may give a better sensitivity to the mass hierarchy.