PT Journal
AU Novella, P
TI The antineutrino energy structure in reactor experiments
SO Advances in High Energy Physics
JI Adv. High. Energy Phys.
PY 2015
BP 364392 - 12pp
VL 2015
DI 10.1155/2015/364392
LA English
AB The recent observation of an energy structure in the reactor antineutrino spectrum is reviewed. The reactor experiments Daya Bay, Double Chooz, and RENO have reported a consistent excess of antineutrinos deviating from the flux predictions, with a local significance of about 4 sigma between 4 and 6 MeV of the positron energy spectrum. The possible causes of the structure are analyzed in this work, along with the different experimental approaches developed to identify its origin. Considering the available data and results from the three experiments, the most likely explanation concerns the reactor flux predictions and the associated uncertainties. Therefore, the different current models are described and compared. The possible sources of incompleteness or inaccuracy of such models are discussed, as well as the experimental data required to improve their precision.
ER