Revised Calculations May Resolve 30‑Year Gallium Neutrino Anomaly

Since the 1990s, experiments using gallium‑based neutrino detectors have reported fewer neutrinos than expected, sparking speculation that a new particle might be involved. A recent study now argues that the discrepancy can be explained by updating the theoretical calculations used to interpret the detector data. By refining the models of neutrino interactions with gallium, the researchers show that the observed shortfall aligns with standard physics, eliminating the need for exotic explanations. The finding suggests that the long‑standing anomaly was a computational artifact rather than evidence of new physics, and it underscores the importance of precise modeling in neutrino experiments.