Speaker
Prof.
Hiroyasu Ejiri
(RCNP Osaka University)
Description
Solar neutrino nuclear responses (square of nuclear matrix elements NMEs) for Ga-71 and double-beta-decay (DBD) isotopes are discussed. Recently we measured the neutrino responses (Gamow Teller GT NMEs) by using high energy-resolution charge exchange reactions at RCNP Osaka. The Ga-71 responses, together with high-precision Ga-71 experiment, provide an opportunity to study CNO neutrino contributions. The measured responses for low-lying states in Ga-71 are consistent with those used for the evaluation of the Ga-71 neutrino capture rates, suggesting that the origin of the Ga-anomaly is not the nuclear capture rate, but something else like oscillation to a possible sterile neutrino or others.
Solar neutrino responses for DBD isotopes of current interest show that low-energy solar neutrinos are measured by using some DBD detectors, while solar neutrino charged current interactions with DBD detectors are potential backgrounds in future DBD experiments.
Primary author
Prof.
Hiroyasu Ejiri
(RCNP Osaka University)
