Measurement of $^{216}$Po half-life with the CUPID-0 experiment

O. Azzolini; J. W. Beeman; F. Bellini; M. Beretta; M. Biassoni; C. Brofferio; C. Bucci; S. Capelli; L. Cardani; P. Carniti; V. Caracciolo; N. Casali; D. Chiesa; M. Clemenza; I. Colantoni; O. Cremonesi; A. Cruciani; I. Dafinei; A. D'Addabbo; S. Di Domizio; F. Ferroni; L. Gironi; A. Giuliani; P. Gorla; C. Gotti; G. Keppel; M. Martinez; S. Nagorny; M. Nastasi; S. Nisi; C. Nones; D. Orlandi; L. Pagnanini; M. Pallavicini; L. Pattavina; M. Pavan; G. Pessina; V. Pettinacci; S. Pirro; S. Pozzi; E. Previtali; A. Puiu; C. Rusconi; K. Schaffner; C. Tomei; M. Vignati; A. Zolotarova

doi:10.1016/j.physletb.2021.136642

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arXiv · 2105.03329

Measurement of $^{216}$Po half-life with the CUPID-0 experiment

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Abstract

Rare event physics demands very detailed background control, high-performance detectors, and custom analysis strategies. Cryogenic calorimeters combine all these ingredients very effectively, representing a promising tool for next-generation experiments. CUPID-0 is one of the most advanced examples of such a technique, having demonstrated its potential with several results obtained with limited exposure. In this paper, we present a further application. Exploiting the analysis of delayed coincidence, we can identify the signals caused by the $^{220}$Rn-$^{216}$Po decay sequence on an event-by-event basis. The analysis of these events allows us to extract the time differences between the two decays, leading to a new evaluation of $^{216}$ half-life, estimated as (143.3 $\pm$ 2.8) ms.

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O. Azzolini, J. W. Beeman, F. Bellini, M. Beretta, M. Biassoni, C. Brofferio, C. Bucci, S. Capelli, L. Cardani, P. Carniti, V. Caracciolo, N. Casali, D. Chiesa, M. Clemenza, I. Colantoni, O. Cremonesi, A. Cruciani, I. Dafinei, A. D'Addabbo, S. Di Domizio, F. Ferroni, L. Gironi, A. Giuliani, P. Gorla, C. Gotti, G. Keppel, M. Martinez, S. Nagorny, M. Nastasi, S. Nisi, C. Nones, D. Orlandi, L. Pagnanini, M. Pallavicini, L. Pattavina, M. Pavan, G. Pessina, V. Pettinacci, S. Pirro, S. Pozzi, E. Previtali, A. Puiu, C. Rusconi, K. Schaffner, C. Tomei, M. Vignati, A. Zolotarova. 2021-05-07. Measurement of $^{216}$Po half-life with the CUPID-0 experiment. https://doi.org/10.1016/j.physletb.2021.136642

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