First data from the CUPID-Mo neutrinoless double beta decay experiment
B. Schmidt, Eitel, K., Siebenborn, B.
Abstract
The CUPID-Mo experiment is searching for neutrinoless double beta decay in\n$^{100}$Mo, evaluating the technology of cryogenic scintillating\nLi$_{2}^{100}$MoO$_4$ detectors for CUPID (CUORE Upgrade with Particle ID).\nCUPID-Mo detectors feature background suppression using a dual-readout scheme\nwith Li$_{2}$MoO$_4$ crystals complemented by Ge bolometers for light\ndetection. The detection of both heat and scintillation light signals allows\nthe efficient discrimination of $\\alpha$ from $\\gamma$&$\\beta$ events. In this\nproceedings, we discuss results from the first 2 months of data taking in\nspring 2019. In addition to an excellent bolometric performance of 6.7$\\,$keV\n(FWHM) at 2615$\\,$keV and an $\\alpha$ separation of better than 99.9\\% for all\ndetectors, we report on bulk radiopurity for Th and U. Finally, we interpret\nthe accumulated physics data in terms of a limit of $T_{1/2}^{0\\nu}\\,>\n3\\times10^{23}\\,$yr for $^{100}$Mo and discuss the sensitivity of CUPID-Mo\nuntil the expected end of physics data taking in early 2020.