Year: 2026
Type: preprint
Abstract: The Gallium Anomaly is the disagreement between the measured capture rate of neutrinos by $^{71}$Ga and the rate theoretically expected from the electron capture decay of $^{71}$Ge. The experimental measurements were performed with intense artificial sources. In the present work we consider the sun as a neutrino source that can be calibrated via the fundamental, standard-model neutrino-electron elastic scattering reaction in terrestrial detectors. The result is found to be not anomalous, with good agreement between the measured value of $66.1\pm3.1$ SNU from SAGE and Gallex/GNO, and the total measured source strengths of solar sources, $67.5^{+1.4}_{-1.1}$ SNU. It may be concluded that neither the $^{71}$Ga charged-current cross section nor gallium experiment extraction and counting efficiencies account for the Gallium Anomaly.
Source: arXiv (Cornell University)
Institutions: Los Alamos National Laboratory, University of Washington
Language: English
Topic: Neutrino Physics Research
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7222658842