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- W2936842891 abstract "In this paper, we have constrained the neutrino mass and mass hierarchy in the $Lambda$CDM cosmology with the neutrino mass hierarchy parameter $Delta$, which represents different mass orderings, by using the {it Planck} 2015 + BAO + SN + $H_{0}$ data set, together with the neutrino oscillation and neutrinoless double beta decay data. We find that the mass of the lightest neutrinos and the total neutrino mass are no more than $0.035$eV and $0.133$ eV at $95%$ confidence level, respectively. Comparing the result of our joint analysis with that obtained using cosmological data alone, we find that, by adding the neutrino oscillation and neutrinoless double beta decay data, the tendency for normal hierarchy has increased a lot. By means of importance sampling, three other priors are taken into account, i.e., the flat logarithmic prior on the absolute value of the neutrino hierarchy parameter $Delta$, the flat linear prior on the total neutrino mass $Sigma m_{nu}$, and the flat logarithmic prior on $Sigma m_{nu}$. We find that the preference for the normal hierarchy is in agreement whatever what kinds of priors we choose. Finally, we make a Bayesian model analysis about four priors and we find that flat-linear and the flat logarithmic priors on $Sigma m_{nu}$ are the most favored priors." @default.
- W2936842891 created "2019-04-25" @default.
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- W2936842891 date "2019-04-22" @default.
- W2936842891 modified "2023-10-16" @default.
- W2936842891 title "Detecting the neutrino mass and mass hierarchy from global data" @default.
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