Regular Article - Experimental Physics
MFV approach to robust estimate of neutron lifetime
Physics Experimental Center, Department of Mathematics and Physics, Hebei GEO University, 050016, Shijiazhuang, China
2 School of Basic Sciences, Tianjin Agricultural University, 300384, Tianjin, China
3 Hebei Key Laboratory of Optoelectronic Information and Geo-detection Technology, Hebei GEO University, Shijiazhuang, China
Accepted: 23 November 2022
Published online: 7 December 2022
Aiming at evaluating the lifetime of the neutron, we introduce a novel statistical method to analyse the updated compilation of precise measurements including the 2022 dataset of Particle Data Group (PDG). Based on the minimization for the information loss principle, unlike the median statistics method, we apply the most frequent value (MFV) procedure to estimate the neutron lifetime, irrespective of the Gaussian or non-Gaussian distributions. Providing a more robust way, the calculated result of the MFV is s with statistical bootstrap errors, while the result of median statistics is s according to the binomial distribution. Using the different central estimates, we also construct the error distributions of neutron lifetime measurements and find the non-Gaussianity, which is still meaningful.
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