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Search for β+/EC double beta decay of 120Te

  • Author(s): Andreotti, E
  • Arnaboldi, C
  • Avignone, FT
  • Balata, M
  • Bandac, I
  • Barucci, M
  • Beeman, JW
  • Bellini, F
  • Brofferio, C
  • Bryant, A
  • Bucci, C
  • Canonica, L
  • Capelli, S
  • Carbone, L
  • Carrettoni, M
  • Clemenza, M
  • Cremonesi, O
  • Creswick, RJ
  • Di Domizio, S
  • Dolinski, MJ
  • Ejzak, L
  • Faccini, R
  • Farach, HA
  • Ferri, E
  • Fiorini, E
  • Foggetta, L
  • Giachero, A
  • Gironi, L
  • Giuliani, A
  • Gorla, P
  • Guardincerri, E
  • Gutierrez, TD
  • Haller, EE
  • Kazkaz, K
  • Kraft, S
  • Kogler, L
  • Maiano, C
  • Maruyama, RH
  • Martinez, C
  • Martinez, M
  • Newman, S
  • Nisi, S
  • Nones, C
  • Norman, EB
  • Nucciotti, A
  • Orio, F
  • Pallavicini, M
  • Palmieri, V
  • Pattavina, L
  • Pavan, M
  • Pedretti, M
  • Pessina, G
  • Pirro, S
  • Previtali, E
  • Risegari, L
  • Rosenfeld, C
  • Rusconi, C
  • Salvioni, C
  • Sangiorgio, S
  • Schaeffer, D
  • Scielzo, ND
  • Sisti, M
  • Smith, AR
  • Tomei, C
  • Ventura, G
  • Vignati, M
  • et al.
Abstract

We present a search for β+/EC double beta decay of 120Te performed with the CUORICINO experiment, an array of TeO2 cryogenic bolometers. After collecting 0.0573 kg · y of 120Te, we see no evidence of a signal and therefore set the following limits on the half-life: T1/20ν>1.9·1021 y at 90% C.L. for the 0ν mode and T1/22ν>7.6·1019 y at 90% C.L. for the 2ν mode. These results improve the existing limits by almost three orders of magnitude (four in the case of 0ν mode). © 2011 Published by Elsevier B.V.

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