High-resolution 96Zr(3He,t) experiment and the matrix element for double-β decay

J. H. Thies, P. Puppe, T. Adachi, M. Dozono, H. Ejiri, D. Frekers, H. Fujita, Y. Fujita, M. Fujiwara, E. W. Grewe, K. Hatanaka, P. Heinrichs, D. Ishikawa, N. T. Khai, A. Lennarz, H. Matsubara, H. Okamura, Y. Y. Oo, T. Ruhe, K. SudaA. Tamii, H. P. Yoshida, R. G.T. Zegers

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    14 Citations (Scopus)

    Abstract

    The Gamow-Teller (GT) strength distribution has been investigated in a high-resolution (3He,t) charge-exchange experiment on the double-beta (ββ) decaying nucleus 96Zr. The experiment was carried out at the Osaka University Research Center for Nuclear Physics (RCNP) with a 420 MeV incident 3He beam and the Grand Raiden magnetic spectrometer. A final-state energy resolution of 32 keV was achieved. A large fraction of the low-energy GTa strength is identified in a single state at 694 keV. A similar observation has been made in a 96Mo(d,2He)96Nb experiment at 120 keV resolution for the GT+ strength. It is found that this single state makes up nearly 100% of the nuclear matrix element for the 96Zr two-neutrino double-beta (2νββ) decay.

    Original languageEnglish
    Article number054323
    JournalPhysical Review C - Nuclear Physics
    Volume86
    Issue number5
    DOIs
    Publication statusPublished - 2012 Nov 30

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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  • Cite this

    Thies, J. H., Puppe, P., Adachi, T., Dozono, M., Ejiri, H., Frekers, D., Fujita, H., Fujita, Y., Fujiwara, M., Grewe, E. W., Hatanaka, K., Heinrichs, P., Ishikawa, D., Khai, N. T., Lennarz, A., Matsubara, H., Okamura, H., Oo, Y. Y., Ruhe, T., ... Zegers, R. G. T. (2012). High-resolution 96Zr(3He,t) experiment and the matrix element for double-β decay. Physical Review C - Nuclear Physics, 86(5), [054323]. https://doi.org/10.1103/PhysRevC.86.054323