CUPID, the Cuore upgrade with particle identification
K. Alfonso, A. Armatol, C. Augier, F. T. Avignone, O. Azzolini, A. S. Barabash, G. Bari, Andrea Barresi, D. Baudin, F. Bellini, G Benato, L. Benussi, V. Berest, M. Beretta, L. Bergé, Manuele Bettelli, M. Biassoni, J. Billard, F. Boffelli, V. Boldrini, E. D. Brandani, C. Brofferio, C. Bucci, M Buchynska, J. Camilleri, A. Campani, Jun Cao, C. Capelli, S. Capelli, V. Caracciolo, L. Cardani, P. Carniti, N. Casali, E. Celi, C. Chang, M. Chapellier, Hong Chen, D. Chiesa, D. Cintas, M. Clemenza, I. Colantoni, S. Copello, O. Cremonesi, R. J. Creswick, A. D’Addabbo, I. Dafinei, F. A. Danevich, Florence De Dominicis, M de Jesus, P. de Marcillac, S. Dell’Oro, S. Di Domizio, S. Di Lorenzo, T. Dixon, A. Drobizhev, L. Dumoulin, M. El Idrissi, M. Faverzani, E. Ferri, F. Ferri, F. Ferroni, E. Figueroa‐Feliciano, J. Formaggio, A. Franceschi, Songnian Fu, B. K. Fujikawa, J. Gascon, S. Ghislandi, A. Giachero, M. Girola, L. Gironi, Adolfo Giuliani, P. Gorla, C. Gotti, C. Grant, P. Gras, P. V. Guillaumon, T. D. Gutierrez, K. Han, E.V Hansen, K. M. Heeger, D.L Helis, H. Z. Huang, M. T. Hurst, L. Imbert, A. Juillard, G. Karapetrov, G. Keppel, H. Khalife, V. V. Kobychev, Yu. G. Kolomensky, Robert G. Kowalski, H. Lattaud, Marc Lefevre, M. Lisovenko, R Liu, Yang Liu, P. Loaiza, L. Ma, F. Mancarella
Abstract
Abstract CUPID, the CUORE Upgrade with Particle Identification, is a next-generation experiment to search for neutrinoless double beta decay ( $$0\mathrm {\nu \beta \beta }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>0</mml:mn> <mml:mrow> <mml:mi>ν</mml:mi> <mml:mi>β</mml:mi> <mml:mi>β</mml:mi> </mml:mrow> </mml:mrow> </mml:math> ) and other rare events using enriched Li $$_{2}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>2</mml:mn> <mml:mrow/> </mml:mmultiscripts> </mml:math> $$^{100}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>100</mml:mn> </mml:mmultiscripts> </mml:math> MoO $$_{4}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>4</mml:mn> <mml:mrow/> </mml:mmultiscripts> </mml:math> scintillating bolometers. It will be hosted by the CUORE cryostat located at the Laboratori Nazionali del Gran Sasso in Italy. The main physics goal of CUPID is to search for $$0\mathrm {\nu \beta \beta }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>0</mml:mn> <mml:mrow> <mml:mi>ν</mml:mi> <mml:mi>β</mml:mi> <mml:mi>β</mml:mi> </mml:mrow> </mml:mrow> </mml:math> of $$^{100}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>100</mml:mn> </mml:mmultiscripts> </mml:math> Mo with a discovery sensitivity covering the full neutrino mass regime in the inverted ordering scenario, as well as the portion of the normal ordering regime with lightest neutrino mass larger than 10 meV. With a conservative background index of 10 $$^{-4}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>4</mml:mn> </mml:mrow> </mml:mmultiscripts> </mml:math> cts $$/($$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>/</mml:mo> <mml:mo>(</mml:mo> </mml:mrow> </mml:math> keV $$\cdot $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>·</mml:mo> </mml:math> kg $$\cdot $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>·</mml:mo> </mml:math> yr $$)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>)</mml:mo> </mml:math> , 240 kg isotope mass, 5 keV FWHM energy resolution at 3 MeV and 10 live-years of data taking, CUPID will have a 90% C.L. half-life exclusion sensitivity of $$1.8\cdot 10^{27}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>1.8</mml:mn> <mml:mo>·</mml:mo> <mml:msup> <mml:mn>10</mml:mn> <mml:mn>27</mml:mn> </mml:msup> </mml:mrow> </mml:math> yr, corresponding to an effective Majorana neutrino mass ( $$m_{\beta \beta }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>m</mml:mi> <mml:mrow> <mml:mi>β</mml:mi> <mml:mi>β</mml:mi> </mml:mrow> </mml:msub> </mml:math> ) sensitivity of 9–15 meV, and a $$3\sigma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>3</mml:mn> <mml:mi>σ</mml:mi> </mml:mrow> </mml:math> discovery sensitivity of $$1\cdot 10^{27}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>1</mml:mn> <mml:mo>·</mml:mo> <mml:msup> <mml:mn>10</mml:mn> <mml:mn>27</mml:mn> </mml:msup> </mml:mrow> </mml:math> </jats:inline-f