Phase-space factors and half-life predictions for Majoron-emitting ββ decay

J. Kotila, J. Barea, and F. Iachello
Phys. Rev. C 91, 064310 – Published 16 June 2015; Erratum Phys. Rev. C 92, 029903 (2015)

Abstract

A complete calculation of phase space factors (PSFs) for Majoron-emitting 0νββ decay modes is presented. The calculation makes use of exact Dirac wave functions with finite nuclear size and electron screening and includes lifetimes, single-electron spectra, summed electron spectra, and angular electron correlations. Combining these results with recent microscopic interacting boson model nuclear matrix elements (NMEs) we make half-life predictions for the ordinary Majoron decay (spectral index n=1). Furthermore, comparing theoretical predictions with the obtained experimental lower bounds for this decay mode we are able to set limits on the effective Majoron-neutrino coupling constant geeM.

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  • Received 13 April 2015
  • Revised 20 May 2015

DOI:https://doi.org/10.1103/PhysRevC.91.064310

©2015 American Physical Society

Erratum

Authors & Affiliations

J. Kotila1,2,*, J. Barea3,†, and F. Iachello2,‡

  • 1Department of Physics, University of Jyvaskyla, P.O. Box 35, FI-40014, University of Jyvaskyla, Finland
  • 2Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, Connecticut 06520-8120, USA
  • 3Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción 4070386, Chile

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

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Issue

Vol. 91, Iss. 6 — June 2015

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