Antineutrino energy spectrum unfolding based on the Daya Bay measurement and its applications *

The prediction of reactor antineutrino spectra will play a crucial role as experiments enter the precision era. positron energy spectrum 3.5 million inverse beta decay reactions observed by Daya Bay experiment, in combination with fission rates fissile isotopes reactor, is used to extract resulting from specific isotopes. This information can be produce precise, data-based other different fractions than Bay. are unfolded obtain removing contribution detector response Wiener-SVD unfolding method. Consistent results obtained methods. A technique construct proposed and investigated. Given fractions, predict 2% precision. In addition, we illustrate how perform rigorous comparison between theoretical model that avoids input bias