Nuclear matrix elements for double-β decay

J. Barea, J. Kotila, and F. Iachello
Phys. Rev. C 87, 014315 – Published 14 January 2013

Abstract

Background: Direct determination of the neutrino mass through double-β decay is at the present time one of the most important areas of experimental and theoretical research in nuclear and particle physics.

Purpose: We calculate nuclear matrix elements for the extraction of the average neutrino mass in neutrinoless double-β decay.

Methods: The microscopic interacting boson model (IBM-2) is used.

Results: Nuclear matrix elements in the closure approximation are calculated for 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 124Sn, 128Te, 130Te, 148Nd, 150Nd, 154Sm, 160Gd, and 198Pt decay.

Conclusions: Realistic predictions for the expected half-lives in neutrinoless double-β decay with light and heavy neutrino exchange in terms of neutrino masses are made and limits are set from current experiments.

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  • Received 30 April 2012

DOI:https://doi.org/10.1103/PhysRevC.87.014315

©2013 American Physical Society

Authors & Affiliations

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

  • 1Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción, 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. 1 — January 2013

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