Evidence against correlations between nuclear decay rates and Earth-Sun distance

TL;DR

This study reanalyzed data on nuclear decay rates to investigate potential correlations with Earth-Sun distance, finding no evidence of such links and setting stricter limits than previous studies.

Contribution

It provides a comprehensive reexamination of existing data, conclusively showing no correlation between decay rates and Earth-Sun distance, improving the limits on possible effects.

Findings

No correlation between decay rates and Earth-Sun distance.

Stricter limits on possible decay rate variations.

Reanalysis refutes previous claims of correlation.

Abstract

We have reexamined our previously published data to search for evidence of correlations between the rates for the alpha, beta-minus, beta-plus, and electron-capture decays of 22Na, 44Ti, 108Agm, 121Snm, 133Ba, and 241Am and the Earth-Sun distance. We find no evidence for such correlations and set limits on the possible amplitudes of such correlations substantially smaller than those observed in previous experiments.