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Perturbative analysis of the 2νββ decays of 100Mo and 116Cd

  • O. Civitarese
  • J. Suhonen
  • H. Ejiri

Abstract:

We have performed a theoretical analysis of the ground-state-to-ground-state transitions in 100Mo and 116Cd, based on the quasiparticle random-phase approximation and on a straightforward perturbative scheme. The results show that the single-state dominance found in the realistic calculations of the nuclear matrix elements, which is consistent with data, can be viewed as a result of the interference between few two-quasiparticle configurations.

PACS. 23.40.Bw Weak-interaction and lepton (including neutrino) aspects – 23.40.Hc Relation with nuclear matrix elements and nuclear structure – 21.60.Jz Hartree-Fock and random-phase approximations – 27.60.+j 90 ⩽ A ⩽ 149 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2003

Authors and Affiliations

  • O. Civitarese
    • 1
  • J. Suhonen
    • 2
  • H. Ejiri
    • 3
  1. 1.Department of Physics, University of La Plata, C.C. 67, 1900 La Plata, ArgentinaAR
  2. 2.Department of Physics, University of Jyväskylä, P.O. Box 35, FIN-40351, Jyväskylä, FinlandFI
  3. 3.RCNP, University of Osaka, Suita Campus, 10-1. Mihogaoka, Ibaruki, Osaka, JapanJP

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