http://arxiv.org/abs/1907.04331
Recent works combining neutrino oscillation and cosmological data to determine the neutrino hierarchy found a range of odds in favour 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 $\Sigma_{\nu}$ measurement. We obtain a target precision of $\sigma(\Sigma_{\nu}) = 0.014$ eV for conclusively establishing the normal hierarchy with future data.
C. Mahony, B. Leistedt, H. Peiris, et. al.
Thu, 11 Jul 19
53/62
Comments: 5 pages, 1 figure. Comments welcome