# The unfolded antineutrino energy spectrum from 1.8 to 11 MeV at Daya Bay. # The binning method of the histogram (unit: MeV): 1.8, 2.05, 2.30, 2.55, 2.80, 3.05, 3.30, 3.55, 3.80, 4.05, 4.30, 4.55, 4.80, 5.05, 5.30, 5.55, 5.80, 6.05, 6.30, 6.55, 6.80, 7.05, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11 # The antineutrino energy spectrum below 7.05 MeV is based on previous study at Daya Bay (arXiv:2102.04614). # The antineutrino energy spectrum above 7.05 MeV is based on this study, with the binning method tuned to meet the previous one. # The fission fractions of $^{235}$U, $^{238}$U, $^{239}$Pu, and $^{241}$Pu are 0.564, 0.076, 0.304, and 0.056 respectively. # The spectral uncertainty and flux uncertainty of the measurement are included here. # The covariance matrix of the antineutrino energy spectrum is also included in this file (see more below). # The content in each bin has been divided by the bin width. # Bin_Center[MeV] Sigma w/o IBD cross section[/fission/MeV] Relative_Uncertainty 1.925 1.28793 11.54% 2.175 1.06046 2.69631% 2.425 0.877182 1.886% 2.675 0.735927 1.56739% 2.925 0.603947 1.41889% 3.175 0.511274 1.50251% 3.425 0.417965 1.69262% 3.675 0.336692 1.7148% 3.925 0.273716 1.78833% 4.175 0.217448 1.88763% 4.425 0.169012 1.84646% 4.675 0.128543 1.92192% 4.925 0.100837 2.1156% 5.175 0.0833094 2.01623% 5.425 0.0662842 1.77535% 5.675 0.0506637 2.09007% 5.925 0.0392418 2.06063% 6.175 0.0289769 2.20403% 6.425 0.020378 3.01311% 6.675 0.0150936 2.47672% 6.925 0.0107762 3.14995% 7.275 0.00607851 2.69578% 7.75 0.00248128 2.85352% 8.25 0.000726664 5.39083% 8.75 0.000159723 12.1643% 9.25 4.75865e-05 21.7178% 9.75 1.76574e-05 31.1431% 10.25 1.6312e-05 23.5644% 10.75 2.55633e-06 93.1814% # The covariance matrix of the antineutrino energy spectrum above 1.8 MeV at Daya Bay (corresponding to the one above). # The correlation between the parts below 7.05 MeV and above 7.05 MeV considers the dominant systematic uncertainty from detector (energy nonlinearity, relative energy scale, detection efficiency). # The spectral uncertainty and flux uncertainty of the measurement are included here. 0.0220901 -4.47085e-05 0.000105065 0.000273692 -4.34054e-05 -0.000188469 -0.000284638 -0.00024108 -0.000227356 -0.000223224 -0.000120696 -0.00012369 -0.000114365 -7.12598e-05 -3.00274e-05 -4.3572e-05 -3.34794e-05 -1.43785e-05 -3.26909e-05 -1.01833e-05 -4.34014e-06 2.49897e-07 3.73215e-10 -6.92071e-08 -1.15952e-08 -1.63972e-09 1.02472e-09 -4.93594e-11 -2.63688e-10 -4.47085e-05 0.000817582 0.000277441 0.000208814 0.000107997 6.42073e-05 4.92682e-05 2.73386e-05 2.39211e-05 1.76499e-05 1.67265e-05 9.31717e-06 8.76424e-06 1.39715e-05 7.13919e-06 4.97064e-06 5.44068e-06 3.12404e-06 3.75157e-06 2.68886e-06 1.24177e-06 3.85689e-07 1.0197e-07 -8.67471e-09 4.23436e-10 1.22621e-09 1.40207e-09 7.60943e-10 -1.78143e-11 0.000105065 0.000277441 0.000273693 0.000141343 0.000108101 9.03448e-05 8.14274e-05 5.61773e-05 4.42851e-05 3.91564e-05 2.90678e-05 1.99106e-05 1.79284e-05 1.7118e-05 1.03818e-05 8.73318e-06 6.8597e-06 4.82149e-06 5.26283e-06 2.1547e-06 1.68715e-06 5.26071e-07 1.96708e-07 4.48683e-08 1.11743e-08 3.80469e-09 1.76038e-09 1.47941e-09 1.95731e-10 0.000273692 0.000208814 0.000141343 0.000133053 6.85566e-05 6.21527e-05 5.18002e-05 3.77165e-05 2.97853e-05 2.15664e-05 1.83658e-05 1.37436e-05 1.05431e-05 1.00345e-05 7.41505e-06 5.35857e-06 4.08441e-06 3.88158e-06 2.62957e-06 1.30385e-06 1.51784e-06 5.23056e-07 2.0845e-07 5.72827e-08 1.34373e-08 4.23108e-09 1.69893e-09 1.55271e-09 2.4066e-10 -4.34054e-05 0.000107997 0.000108101 6.85566e-05 7.34337e-05 4.8413e-05 4.7436e-05 3.85662e-05 2.91331e-05 2.39835e-05 1.85952e-05 1.343e-05 1.13264e-05 1.02427e-05 5.84693e-06 5.60431e-06 4.65295e-06 2.74512e-06 2.75205e-06 1.64029e-06 1.09939e-06 4.56338e-07 1.84685e-07 5.29021e-08 1.22299e-08 3.78053e-09 1.459e-09 1.35956e-09 2.18137e-10 -0.000188469 6.42073e-05 9.03448e-05 6.21527e-05 4.8413e-05 5.90125e-05 4.50049e-05 3.57137e-05 3.06564e-05 2.56035e-05 1.84038e-05 1.45763e-05 1.17234e-05 9.28979e-06 6.64585e-06 5.92297e-06 3.90338e-06 3.04697e-06 2.98113e-06 1.1969e-06 1.09462e-06 3.95721e-07 1.60253e-07 4.61024e-08 1.05885e-08 3.25238e-09 1.24513e-09 1.15929e-09 1.85831e-10 -0.000284638 4.92682e-05 8.14274e-05 5.18002e-05 4.7436e-05 4.50049e-05 5.00493e-05 3.42135e-05 3.00565e-05 2.50346e-05 1.90401e-05 1.40244e-05 1.17707e-05 9.62616e-06 6.19094e-06 5.66206e-06 3.92355e-06 3.03936e-06 3.07196e-06 1.09983e-06 1.05421e-06 3.4493e-07 1.40514e-07 4.11047e-08 9.23851e-09 2.78634e-09 1.04283e-09 9.71687e-10 1.55553e-10 -0.00024108 2.73386e-05 5.61773e-05 3.77165e-05 3.85662e-05 3.57137e-05 3.42135e-05 3.33343e-05 2.28983e-05 2.05546e-05 1.50132e-05 1.17707e-05 9.89392e-06 7.91889e-06 4.80733e-06 4.64559e-06 3.57936e-06 2.42184e-06 2.33168e-06 1.06134e-06 9.1409e-07 2.90174e-07 1.1824e-07 3.47436e-08 7.68422e-09 2.29329e-09 8.48471e-10 7.84871e-10 1.24214e-10 -0.000227356 2.39211e-05 4.42851e-05 2.97853e-05 2.91331e-05 3.06564e-05 3.00565e-05 2.28983e-05 2.39604e-05 1.65874e-05 1.27683e-05 1.04726e-05 9.0174e-06 6.44473e-06 4.16883e-06 4.31131e-06 2.81118e-06 2.0481e-06 2.14333e-06 8.63974e-07 7.63118e-07 2.38877e-07 9.68253e-08 2.80824e-08 6.1508e-09 1.82504e-09 6.80386e-10 6.20921e-10 9.55121e-11 -0.000223224 1.76499e-05 3.91564e-05 2.15664e-05 2.39835e-05 2.56035e-05 2.50346e-05 2.05546e-05 1.65874e-05 1.68477e-05 1.04574e-05 8.71363e-06 7.25303e-06 5.66281e-06 3.63137e-06 3.39338e-06 2.41228e-06 1.59998e-06 1.86108e-06 7.30629e-07 5.66107e-07 2.03687e-07 8.32451e-08 2.46654e-08 5.28874e-09 1.54136e-09 5.58364e-10 5.11259e-10 7.89289e-11 -0.000120696 1.67265e-05 2.90678e-05 1.83658e-05 1.85952e-05 1.84038e-05 1.90401e-05 1.50132e-05 1.27683e-05 1.04574e-05 9.73909e-06 5.71978e-06 5.24238e-06 4.42283e-06 2.74234e-06 2.49661e-06 1.71911e-06 1.32059e-06 1.27829e-06 5.83616e-07 4.41204e-07 1.50204e-07 6.03985e-08 1.72088e-08 3.71628e-09 1.09564e-09 4.12358e-10 3.68065e-10 5.41876e-11 -0.00012369 9.31717e-06 1.99106e-05 1.37436e-05 1.343e-05 1.45763e-05 1.40244e-05 1.17707e-05 1.04726e-05 8.71363e-06 5.71978e-06 6.10332e-06 4.19624e-06 3.32501e-06 2.14285e-06 2.07199e-06 1.41683e-06 1.00748e-06 1.12671e-06 3.89253e-07 4.26123e-07 1.17706e-07 4.75352e-08 1.3717e-08 2.93556e-09 8.61232e-10 3.18911e-10 2.85108e-10 4.22529e-11 -0.000114365 8.76424e-06 1.79284e-05 1.05431e-05 1.13264e-05 1.17234e-05 1.17707e-05 9.89392e-06 9.0174e-06 7.25303e-06 5.24238e-06 4.19624e-06 4.55104e-06 2.48968e-06 1.75827e-06 1.83802e-06 1.18058e-06 8.91197e-07 8.96849e-07 3.88655e-07 3.38622e-07 9.3797e-08 3.78376e-08 1.08772e-08 2.30653e-09 6.70937e-10 2.49109e-10 2.21233e-10 3.21301e-11 -7.12598e-05 1.39715e-05 1.7118e-05 1.00345e-05 1.02427e-05 9.28979e-06 9.62616e-06 7.91889e-06 6.44473e-06 5.66281e-06 4.42283e-06 3.32501e-06 2.48968e-06 2.82142e-06 1.16564e-06 1.32691e-06 1.00737e-06 5.88166e-07 7.3702e-07 2.7999e-07 2.70572e-07 8.27572e-08 3.40491e-08 1.02059e-08 2.14009e-09 6.13561e-10 2.18002e-10 1.99364e-10 3.04453e-11 -3.00274e-05 7.13919e-06 1.03818e-05 7.41505e-06 5.84693e-06 6.64585e-06 6.19094e-06 4.80733e-06 4.16883e-06 3.63137e-06 2.74234e-06 2.14285e-06 1.75827e-06 1.16564e-06 1.38481e-06 6.70704e-07 5.63112e-07 5.12248e-07 3.89705e-07 2.16792e-07 1.23884e-07 6.78121e-08 2.82161e-08 8.64471e-09 1.81226e-09 5.15783e-10 1.79387e-10 1.67621e-10 2.64458e-11 -4.3572e-05 4.97064e-06 8.73318e-06 5.35857e-06 5.60431e-06 5.92297e-06 5.66206e-06 4.64559e-06 4.31131e-06 3.39338e-06 2.49661e-06 2.07199e-06 1.83802e-06 1.32691e-06 6.70704e-07 1.12128e-06 4.25501e-07 4.12389e-07 4.89473e-07 1.12276e-07 1.89907e-07 5.14933e-08 2.14674e-08 6.61182e-09 1.39145e-09 3.98027e-10 1.37901e-10 1.29424e-10 2.06755e-11 -3.34794e-05 5.44068e-06 6.8597e-06 4.08441e-06 4.65295e-06 3.90338e-06 3.92355e-06 3.57936e-06 2.81118e-06 2.41228e-06 1.71911e-06 1.41683e-06 1.18058e-06 1.00737e-06 5.63112e-07 4.25501e-07 6.53884e-07 1.81168e-07 2.66917e-07 1.91521e-07 6.86769e-08 4.18778e-08 1.77798e-08 5.65295e-09 1.18578e-09 3.35185e-10 1.12571e-10 1.09001e-10 1.81444e-11 -1.43785e-05 3.12404e-06 4.82149e-06 3.88158e-06 2.74512e-06 3.04697e-06 3.03936e-06 2.42184e-06 2.0481e-06 1.59998e-06 1.32059e-06 1.00748e-06 8.91197e-07 5.88166e-07 5.12248e-07 4.12389e-07 1.81168e-07 4.07884e-07 1.35871e-07 6.74259e-08 1.33446e-07 3.15383e-08 1.35303e-08 4.38496e-09 9.21157e-10 2.59916e-10 8.57912e-11 8.45812e-11 1.44649e-11 -3.26909e-05 3.75157e-06 5.26283e-06 2.62957e-06 2.75205e-06 2.98113e-06 3.07196e-06 2.33168e-06 2.14333e-06 1.86108e-06 1.27829e-06 1.12671e-06 8.96849e-07 7.3702e-07 3.89705e-07 4.89473e-07 2.66917e-07 1.35871e-07 3.77008e-07 3.26428e-08 6.80689e-08 2.31084e-08 1.00569e-08 3.35076e-09 7.02679e-10 1.97225e-10 6.3451e-11 6.39888e-11 1.13041e-11 -1.01833e-05 2.68886e-06 2.1547e-06 1.30385e-06 1.64029e-06 1.1969e-06 1.09983e-06 1.06134e-06 8.63974e-07 7.30629e-07 5.83616e-07 3.89253e-07 3.88655e-07 2.7999e-07 2.16792e-07 1.12276e-07 1.91521e-07 6.74259e-08 3.26428e-08 1.39746e-07 -1.56018e-08 1.68742e-08 7.35405e-09 2.44425e-09 5.14499e-10 1.44619e-10 4.66733e-11 4.72601e-11 8.3611e-12 -4.34014e-06 1.24177e-06 1.68715e-06 1.51784e-06 1.09939e-06 1.09462e-06 1.05421e-06 9.1409e-07 7.63118e-07 5.66107e-07 4.41204e-07 4.26123e-07 3.38622e-07 2.70572e-07 1.23884e-07 1.89907e-07 6.86769e-08 1.33446e-07 6.80689e-08 -1.56018e-08 1.15224e-07 1.42613e-08 6.58765e-09 2.40731e-09 5.0775e-10 1.40326e-10 4.12883e-11 4.57564e-11 9.02947e-12 2.49897e-07 3.85689e-07 5.26071e-07 5.23056e-07 4.56338e-07 3.95721e-07 3.4493e-07 2.90174e-07 2.38877e-07 2.03687e-07 1.50204e-07 1.17706e-07 9.3797e-08 8.27572e-08 6.78121e-08 5.14933e-08 4.18778e-08 3.15383e-08 2.31084e-08 1.68742e-08 1.42613e-08 2.68513e-08 -6.16815e-09 2.52878e-09 -9.87321e-10 2.73453e-10 -1.45032e-10 6.55931e-11 -3.60592e-11 3.73215e-10 1.0197e-07 1.96708e-07 2.0845e-07 1.84685e-07 1.60253e-07 1.40514e-07 1.1824e-07 9.68253e-08 8.32451e-08 6.03985e-08 4.75352e-08 3.78376e-08 3.40491e-08 2.82161e-08 2.14674e-08 1.77798e-08 1.35303e-08 1.00569e-08 7.35405e-09 6.58765e-09 -6.16815e-09 5.01316e-09 -1.62286e-09 9.69918e-10 -1.55131e-10 1.28053e-10 -4.63957e-11 3.0714e-11 -6.92071e-08 -8.67471e-09 4.48683e-08 5.72827e-08 5.29021e-08 4.61024e-08 4.11047e-08 3.47436e-08 2.80824e-08 2.46654e-08 1.72088e-08 1.3717e-08 1.08772e-08 1.02059e-08 8.64471e-09 6.61182e-09 5.65295e-09 4.38496e-09 3.35076e-09 2.44425e-09 2.40731e-09 2.52878e-09 -1.62286e-09 1.53454e-09 -1.53987e-10 2.60667e-10 -5.02936e-11 4.69131e-11 -1.55509e-11 -1.15952e-08 4.23436e-10 1.11743e-08 1.34373e-08 1.22299e-08 1.05885e-08 9.23851e-09 7.68422e-09 6.1508e-09 5.28874e-09 3.71628e-09 2.93556e-09 2.30653e-09 2.14009e-09 1.81226e-09 1.39145e-09 1.18578e-09 9.21157e-10 7.02679e-10 5.14499e-10 5.0775e-10 -9.87321e-10 9.69918e-10 -1.53987e-10 3.77497e-10 -2.09171e-11 4.90332e-11 -1.22038e-11 1.12188e-11 -1.63972e-09 1.22621e-09 3.80469e-09 4.23108e-09 3.78053e-09 3.25238e-09 2.78634e-09 2.29329e-09 1.82504e-09 1.54136e-09 1.09564e-09 8.61232e-10 6.70937e-10 6.13561e-10 5.15783e-10 3.98027e-10 3.35185e-10 2.59916e-10 1.97225e-10 1.44619e-10 1.40326e-10 2.73453e-10 -1.55131e-10 2.60667e-10 -2.09171e-11 1.06806e-10 -2.58253e-11 2.21409e-11 -7.68228e-12 1.02472e-09 1.40207e-09 1.76038e-09 1.69893e-09 1.459e-09 1.24513e-09 1.04283e-09 8.48471e-10 6.80386e-10 5.58364e-10 4.12358e-10 3.18911e-10 2.49109e-10 2.18002e-10 1.79387e-10 1.37901e-10 1.12571e-10 8.57912e-11 6.3451e-11 4.66733e-11 4.12883e-11 -1.45032e-10 1.28053e-10 -5.02936e-11 4.90332e-11 -2.58253e-11 3.02399e-11 -1.6115e-11 8.88968e-12 -4.93594e-11 7.60943e-10 1.47941e-09 1.55271e-09 1.35956e-09 1.15929e-09 9.71687e-10 7.84871e-10 6.20921e-10 5.11259e-10 3.68065e-10 2.85108e-10 2.21233e-10 1.99364e-10 1.67621e-10 1.29424e-10 1.09001e-10 8.45812e-11 6.39888e-11 4.72601e-11 4.57564e-11 6.55931e-11 -4.63957e-11 4.69131e-11 -1.22038e-11 2.21409e-11 -1.6115e-11 1.4775e-11 -6.53667e-12 -2.63688e-10 -1.78143e-11 1.95731e-10 2.4066e-10 2.18137e-10 1.85831e-10 1.55553e-10 1.24214e-10 9.55121e-11 7.89289e-11 5.41876e-11 4.22529e-11 3.21301e-11 3.04453e-11 2.64458e-11 2.06755e-11 1.81444e-11 1.44649e-11 1.13041e-11 8.3611e-12 9.02947e-12 -3.60592e-11 3.0714e-11 -1.55509e-11 1.12188e-11 -7.68228e-12 8.88968e-12 -6.53667e-12 5.67405e-12