Rejection of randomly coinciding 2ν2β events in ZnMoO4 scintillating bolometers

  title={Rejection of randomly coinciding 2$\nu$2$\beta$ events in ZnMoO4 scintillating bolometers},
  author={Dmitry Chernyak and Fedor Danevich and A. Giuliani and M. Mancuso and Claudia Nones and Emiliano Olivieri and M. Tenconi and V. I. Tretyak},
Random coincidence of 2ν2β decay events could be one of the main sources of background for 0ν2β decay in cryogenic bolometers due to their poor time resolution. Pulse-shape discrimination by using front edge analysis, the mean-time and χ 2 methods was applied to discriminate randomly coinciding 2ν2β events in ZnMoO4 cryogenic scintillating bolometers. The background can be effectively rejected on the level of 99% by the mean-time analysis of heat signals with the rise time about 14 ms and the… 

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