JUNO's initial results combined with global data give a 2.2-2.3 sigma preference for normal neutrino mass ordering.
Quantifying the sensitivity of oscillation experiments to the neutrino mass ordering
3 Pith papers cite this work. Polarity classification is still indexing.
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abstract
Determining the type of the neutrino mass ordering (normal versus inverted) is one of the most important open questions in neutrino physics. In this paper we clarify the statistical interpretation of sensitivity calculations for this measurement. We employ standard frequentist methods of hypothesis testing in order to precisely define terms like the median sensitivity of an experiment. We consider a test statistic $T$ which in a certain limit will be normal distributed. We show that the median sensitivity in this limit is very close to standard sensitivities based on $\Delta\chi^2$ values from a data set without statistical fluctuations, such as widely used in the literature. Furthermore, we perform an explicit Monte Carlo simulation of the INO, JUNO, LBNE, NOvA, and PINGU experiments in order to verify the validity of the Gaussian limit, and provide a comparison of the expected sensitivities for those experiments.
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Develops a likelihood ratio framework for assessing highly motivated subdominant new physics signals against experimental residuals that appear consistent with background predictions.
Updated global analysis finds well-determined neutrino mixing parameters with nearly equal preference for normal and inverted mass orderings in the full dataset.
citing papers explorer
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Lessons from the first JUNO results
JUNO's initial results combined with global data give a 2.2-2.3 sigma preference for normal neutrino mass ordering.
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A Likelihood Ratio Framework for Highly Motivated Subdominant Signals
Develops a likelihood ratio framework for assessing highly motivated subdominant new physics signals against experimental residuals that appear consistent with background predictions.
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NuFit-6.0: Updated global analysis of three-flavor neutrino oscillations
Updated global analysis finds well-determined neutrino mixing parameters with nearly equal preference for normal and inverted mass orderings in the full dataset.