An overview of the nEXO experiment

ORAL

Abstract

nEXO is a next-generation liquid xenon experiment to search for neutrino-less double beta decay (0νββ) of 136Xe using a monolithic 5-tonne liquid xenon time projection chamber. Ionization electrons and scintillation photons from energy deposits in liquid xenon will be recorded with a segmented anode and a large SiPM array. nEXO is designed to achieve 1% energy resolution at the 0νββ Q-value and be built with low radioactivity materials. This talk will present recent progress in the detector design and R&D, an improved modeling of signal readout, and a deep-learning-based event discrimination and data analysis architecture. These improvements result in an estimated discovery potential for 0νββ at 0.74×1028 years at 3σ significance in 10 years of data taking.

*The speaker would like to acknowledge and thank the Office of Nuclear Physics within the DOE's Office of Science for supporting this work. Support for nEXO comes from the Office of Nuclear Physics within DOE's Office of Science, and NSF in the United States; from NSERC, CFI, FRQNT, NRC, and the McDonald Institute (CFREF) in Canada; from IBS in Korea; from RFBR in Russia; and from CAS and NSFC in China. The work reported in this talk was supported in part by Laboratory Directed Research and Development (LDRD) programs at Brookhaven National Laboratory (BNL), Lawrence Livermore National Laboratory (LLNL), Oak Ridge National Laboratory (ORNL), Pacific Northwest National Laboratory (PNNL), and SLAC National Accelerator Laboratory.

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Presenters

  • Zepeng Li

    • University Of California San Diego

Authors

  • Zepeng Li

    • University Of California San Diego