Physics Letters B (Nov 2021)

Measurement of 216Po 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. Schäffner,
  • C. Tomei,
  • M. Vignati,
  • A. Zolotarova

Journal volume & issue
Vol. 822
p. 136642

Abstract

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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.

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