Neutrinoless double-positron decay and positron-emitting electron capture in the interacting boson model

J. Barea, J. Kotila, and F. Iachello
Phys. Rev. C 87, 057301 – Published 7 May 2013

Abstract

Neutrinoless double-β decay is of fundamental importance for determining the neutrino mass. Although double electron decay is the most promising mode, in very recent years interest in double positron decay, positron emitting electron capture, and double electron capture has been renewed. We present here results of a calculation of nuclear matrix elements for neutrinoless double-β+ decay and positron emitting electron capture within the framework of the microscopic interacting boson model (IBM-2) for 58Ni, 64Zn, 78Kr, 96Ru, 106Cd, 124Xe, 130Ba, and 136Ce decay. By combining these with a calculation of phase space factors we calculate expected half-lives.

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  • Received 18 March 2013

DOI:https://doi.org/10.1103/PhysRevC.87.057301

©2013 American Physical Society

Authors & Affiliations

J. Barea1,*, J. Kotila2,†, and F. Iachello2,‡

  • 1Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción 4070386, Chile
  • 2Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, Connecticut 06520-8120, USA

  • *jbarea@udec.cl
  • jenni.kotila@yale.edu
  • francesco.iachello@yale.edu

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Issue

Vol. 87, Iss. 5 — May 2013

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