2017/02/14 by Giunti, Carlo
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Nuclear Experiment (nucl-ex)
paper · doi:10.48550/arxiv.1702.04139
We consider the possibility that the reactor antineutrino anomaly is due to a miscalculation of one or more of the 235U, 238U, 239Pu, and 241Pu reactor antineutrino fluxes. From the fit of the data we obtain the precise determination σf,235 = ( 6.33 ± 0.08 ) × 10-43 cm2 / fission of the 235U 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. We conclude that it is very likely that at least the calculation of the 235U flux must be revised.