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Search for two-neutrino double-beta decay of <sup>136</sup>Xe to the excited state of <sup>136</sup>Ba with the complete EXO-200 dataset*
Abstract A new search for two-neutrino double-beta (2 νββ ) decay of 136 Xe to the <?CDATA $0_1^ + $?> excited state of 136 Ba is performed with the full EXO-200 dataset. A deep learning-based convolutional neural network is used to discriminate signal from background events. Signal detection efficiency is …