Neutrino experiment in the reactor of the Rovno atomic power plant: cross section for inverse β decay
Afonin A. I., Borovoi A. A., Dobrynin Yu. L., Ketov S. N., Kopelkin V. I., Mikaelyan L. A., Skorokhvatov M. D., S. V. Tolokonnikov, A. N. Kheruvtsmov
Two experiments were carried out simultaneously to measure the cross section for the reaction ve + p->n + e+ in the same ve flux by different methods in the neutrino laboratory at the Rovno atomic power plant. The results reveal 29 Χ 103 ve. The cross section assigned to antineutrinos accompanying a single 235U fission event is found to be of = 6.08 X 10~43 cmVfission ± 3.5% (reactor) + 5% (detector). The results are compared with calculated cross sections. The problem of searching for Pontecorvo oscillations is discussed. Limitations on the characteristics of these oscillations are given.