• DOI:10.1140/EPJC/S10052-020-8280-4
• Corpus ID: 214623245

Search for neutrinoless double beta decay of $$^{64}$$Zn and $$^{70}$$Zn with CUPID-0

@article{Azzolini2020SearchFN,
  title={Search for neutrinoless double beta decay of \$\$^\{64\}\$\$Zn and \$\$^\{70\}\$\$Zn with CUPID-0},
  author={Oscar Azzolini and Jeffrey W. Beeman and Fabio Bellini and M. Beretta and M. Biassoni and Chiara Brofferio and C. Bucci and Silvia C. Capelli and Laura Cardani and E. Celi and Paolo Carniti and Nicola Casali and D. Chiesa and Massimiliano Clemenza and O. Cremonesi and Angelo Cruciani and A. D’Addabbo and Ioan Dafinei and Sergio Di Domizio and F Ferroni and Luca Gironi and A. Giuliani and Paolo Gorla and Claudio Gotti and G. Keppel and M. Martinez and Serge Nagorny and Massimiliano Nastasi and S Nisi and Claudia Nones and Donato Orlandi and L. Pagnanini and Marco B. Pallavicini and Luca Pattavina and Maura Pavan and Gianluigi Pessina and Valerio Pettinacci and Stefano Pirr{\`o} and Stefano Pozzi and Ezio Previtali and Andrei Puiu and Claudia Rusconi and K. Sch{\"a}ffner and Claudia Tomei and Marco Vignati and Anastasiia Zolotarova},
  journal={The European Physical Journal C},
  year={2020}
}

• O. Azzolini, J. Beeman, +43 authors A. Zolotarova
• Published 24 March 2020
• Art
• The European Physical Journal C

<jats:p>CUPID-0 is the first pilot experiment of CUPID, a next-generation project searching for neutrinoless double beta decay. In its first scientific run, CUPID-0 operated 26 ZnSe cryogenic calorimeters coupled to light detectors in the underground Laboratori Nazionali del Gran Sasso. In this work, we analyzed a ZnSe exposure of 11.34 kg year to search for the neutrinoless double beta decay of <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{70}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>70</mml:mn></mml:msup></mml:math></jats:alternatives></jats:inline-formula>Zn and for the neutrinoless positron-emitting electron capture of <jats:inline-formula><jats:alternatives><jats:tex-math>$$^{64}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>64</mml:mn></mml:msup></mml:math></jats:alternatives></jats:inline-formula>Zn. We found no evidence for these decays and set 90<jats:inline-formula><jats:alternatives><jats:tex-math>$$\%$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mo>%</mml:mo></mml:math></jats:alternatives></jats:inline-formula> credible interval limits of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\hbox {T}_{1/2}^{0\nu \beta \beta }$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mtext>T</mml:mtext><mml:mrow><mml:mn>1</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mn>0</mml:mn><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:mrow></mml:msubsup></mml:math></jats:alternatives></jats:inline-formula>(<jats:inline-formula><jats:alternatives><jats:tex-math>$$^{70}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>70</mml:mn></mml:msup></mml:math></jats:alternatives></jats:inline-formula>Zn) > 1.6 <jats:inline-formula><jats:alternatives><jats:tex-math>$$10^{21}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mn>10</mml:mn><mml:mn>21</mml:mn></mml:msup></mml:math></jats:alternatives></jats:inline-formula> year and <jats:inline-formula><jats:alternatives><jats:tex-math>$$\hbox {T}_{1/2}^{0\nu EC \beta +}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mtext>T</mml:mtext><mml:mrow><mml:mn>1</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mn>0</mml:mn><mml:mi>ν</mml:mi><mml:mi>E</mml:mi><mml:mi>C</mml:mi><mml:mi>β</mml:mi><mml:mo>+</mml:mo></mml:mrow></mml:msubsup></mml:math></jats:alternatives></jats:inline-formula>(<jats:inline-formula><jats:alternatives><jats:tex-math>$$^{64}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>64</mml:mn></mml:msup></mml:math></jats:alternatives></jats:inline-formula>Zn) > 1.2<jats:inline-formula><jats:alternatives><jats:tex-math>$$\times 10^{22}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mo>×</mml:mo><mml:msup><mml:mn>10</mml:mn><mml:mn>22</mml:mn></mml:msup></mml:mrow></mml:math></jats:alternatives></jats:inline-formula> year, surpassing by more than one order of magnitude the previous experimental results (Belli et al. in J Phys G 38(11):115107, <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="https://doi.org/10.1088/0954-3899/38/11/115107">https://doi.org/10.1088/0954-3899/38/11/115107</jats:ext-link>, 2011).</jats:p>