Y. Declais et al., STUDY OF REACTOR ANTINEUTRINO INTERACTION WITH PROTON AT BUGEY NUCLEAR-POWER-PLANT, Physics letters. Section B, 338(2-3), 1994, pp. 383-389
We report on a high precision measurement at 15m from a 2800 MWth reac
tor in which 300000 events of electron antineutrino interactions with
proton have been detected using an integral method. The cross section
of the neutron inverse beta-decay process has been measured with an ac
curacy of 1.4%. The ratio of measured cross section to the expected on
e in the standard V-A theory of weak interactions is: sigma f/<sigma(V
-A) = 98.7% +/- 1.4% +/- 2.7% = 0.987 +/- 0.030.