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 220Rn-216Po 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 216Po half-life, estimated as (143.3±2.8) ms.
Measurement of 216Po half-life with the CUPID-0 experiment / Azzolini, O., Beeman, J.W., Bellini, F., Beretta, M., Biassoni, M., Brofferio, C., Bucci, C., Capelli, S., Cardani, L., Carniti, P., Caracciolo, V., Casali, N., Chiesa, D., Clemenza, M., Colantoni, I., Cremonesi, O., Cruciani, A., Dafinei, I., D'Addabbo, A., Di Domizio, S., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 822:(2021), p. 136642. [10.1016/j.physletb.2021.136642]
Measurement of 216Po half-life with the CUPID-0 experiment
Bellini F.;Casali N.;Dafinei I.;Vignati M.;
2021
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 220Rn-216Po 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 216Po half-life, estimated as (143.3±2.8) ms.| File | Dimensione | Formato | |
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