Recent results from the Bugey neutrino oscillation experiment

Abstract

The energy spectrum of electron antineutrinos has been measured at two distances, 13.6 and 18.3 meters, from the core of a PWR power reactor at Bugey (FRANCE). About 63000 antineutrinos events have been recorded using the inverse β‐decay reaction νe+p→n+e+. A significant difference in the counting rate between the two positions has been observed. The compatibility of the results with solutions in a two‐neutrino oscillation analysis is discussed.