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Physical Review D
Recent works combining neutrino oscillation and cosmological data to determine the neutrino hierarchy found a range of odds in favor of the normal hierarchy. These results arise from differing approaches to incorporating prior knowledge about neutrinos. We develop a hierarchy-agnostic prior and show that the hierarchy cannot be conclusively determined with current data. The determination of the hierarchy is limited by the neutrino mass scale Σ ν measurement. We obtain a target precision of σðΣdoi:10.1103/physrevd.101.083513 fatcat:7zutysyaojhejoq7ixj2uv6b7a