Precise determination of the ^{235}U reactor antineutrino cross section per fission
Abstract
We investigate which among the reactor antineutrino fluxes from the decays of the fission products of ^{235}U, ^{238}U, ^{239}Pu, and ^{241}Pu may be responsible for the reactor antineutrino anomaly if the anomaly is due to a miscalculation of the antineutrino fluxes. We find that it is very likely that at least the calculation of the ^{235}U flux must be revised. From the fit of the data we obtain the precise determination σ_{235} = (6.33 ± 0.08) ×10^{43}cm^{2} /fission of the ^{235}U cross section per fission, which is more precise than the calculated value and differs from it by 2.2σ. The cross sections per fission of the other fluxes have large uncertainties and in practice their values are undetermined by the fit.
 Publication:

Physics Letters B
 Pub Date:
 January 2017
 DOI:
 10.1016/j.physletb.2016.11.028
 arXiv:
 arXiv:1608.04096
 Bibcode:
 2017PhLB..764..145G
 Keywords:

 High Energy Physics  Phenomenology;
 High Energy Physics  Experiment;
 Nuclear Experiment;
 Nuclear Theory
 EPrint:
 9 pages. Final version published in Physics Letters B 764 (2017) 145