Precision evaluation of the Ga 71 (νe,e-) solar neutrino capture rate from the (He 3,t) charge-exchange reaction

D. Frekers, T. Adachi, H. Akimune, M. Alanssari, B. A. Brown, B. T. Cleveland, H. Ejiri, H. Fujita, Y. Fujita, M. Fujiwara, V. N. Gavrin, M. N. Harakeh, K. Hatanaka, M. Holl, C. Iwamoto, A. Lennarz, A. Okamoto, H. Okamura, T. Suzuki, A. Tamii

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    20 Citations (Scopus)

    Abstract

    A precision measurement of the Ga71(He3,t)Ge71 charge-exchange reaction was performed. By using a rather complete set of theoretical form factors to describe the cross-section angular distributions over a large angular range, the Gamow-Teller strength distribution up to the effective neutron-separation energy in Ge71 was extracted. The data and the analysis constrain the Ga71(νe,e-) solar neutrino rate in a neutrino nonoscillation scenario. For nonoscillating neutrinos we report a solar neutrino capture rate of 122.4±3.4(stat)±1.1(sys) SNU, which is lower than the presently accepted value of 132±18 SNU, though not in disagreement given the quoted errors.

    Original languageEnglish
    Article number034608
    JournalPhysical Review C - Nuclear Physics
    Volume91
    Issue number3
    DOIs
    Publication statusPublished - 2015 Mar 13

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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