Hiroshi AokiK. HashimotoK. HondaN. InoueN. KawasumiN. MartinićC. E. NaviaN. OhmoriA. OhsawaL. C. S. Oliveira2026-03-222026-03-22200310.1016/s0920-5632(03)80375-4https://doi.org/10.1016/s0920-5632(03)80375-4https://andeanlibrary.org/handle/123456789/62665enPhysicsHadronNuclear physicsAir showerHaloEvent (particle physics)DetectorCalorimeter (particle physics)UpgradeEvent reconstructionA halo event observed by hybrid detectors at Mt. Chacaltayaarticle