Benchmarking 136Xe neutrinoless ββ decay matrix element calculations with the 138Ba(p,t) reaction

Physics Letters B

P.E. Garrett¹  G.C. Ball²  M. Kamil³  A. Diaz Varela⁴  R. Lindsay⁵  V. Bildstein⁶  B.M. Rebeiro⁶  J.N. Orce⁶  S. Triambak⁶  P.Z. Mabika⁷  H.-F. Wirth⁸  J.C. Nzobadila Ondze⁹  D.L. Fang⁹  T. Faestermann⁹  B.A. Brown⁹  R. Hertenberger⁹  K.G. Leach^1,10  B. Jigmeddorj^1,11  M. Horoi^1,12  C. Burbadge^1,13  P. Adsley^1,14 

[1] Corresponding author.;Department of Physics and Astronomy, University of the Western Cape, P/B X17, Bellville 7535, South Africa;School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China;iThemba LABS, P.O. Box 722, Somerset West 7129, South Africa;Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824-1321, USA;Department of Physics and Astronomy, University of the Western Cape, P/B X17, Bellville 7535, South Africa;Department of Physics, Central Michigan University, Mount Pleasant, MI 48859, USA;Department of Physics, Colorado School of Mines, Golden, CO 80401, USA;Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada;Fakultät für Physik, Ludwig-Maximilians-Universität München, D-85748 Garching, Germany;Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China;Physik Department, Technische Universität München, D-85748 Garching, Germany;School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa;TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada;

关键词: Neutrinoless double beta decay;    Nuclear matrix elements;    Transfer reactions;    Shell model;    QRPA;   

DOI  :  

来源: DOAJ

【 摘 要 】

We used a high-resolution magnetic spectrograph to study neutron pair-correlated 0+ states in 136Ba, produced via the Ba138(p,t) reaction. In conjunction with state-of-the-art shell model calculations, these data benchmark part of the dominant Gamow-Teller component of the nuclear matrix element (NME) for 136Xe neutrinoless double beta (0νββ) decay. We demonstrate for the first time an evaluation of part of a 0νββ decay NME by use of an experimental observable, presenting a new avenue of approach for more accurate calculations of 0νββ decay matrix elements.

【 授权许可】

Unknown