Determination of the Gamow-Teller transition strength to 116In(g.s.) by the 116Cd(p,n) reaction at 300 MeV for the study of the nuclear matrix element of the two-neutrino double beta decay

Masaki Sasano, Hideyuki Sakai, Kentaro Yako, Hironori Kuboki, Kenjiro Miki, Shumpei Noji, Tomotsugu Wakasa, Masanori Dozono, Kimiko Sekiguchi, Tomohiro Uesaka, Takahiro Kawabata, Yukie Maeda, Satoshi Sakaguchi, Yoshiko Sasamoto, Kenji Suda, Keisuke Itoh, Kichiji Hatanaka, Hiroyuki Okamura, Atsushi Tamii, Kazuo MutoDieter Frekers, M. B. Greenfield

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Abstract

The 116Cd(p,n) experiment at 300 MeV has been performed for deducing the Gamow-Teller (GT) transition strengths B(GT-) in 116In. For the transition to the ground state, the B(GT-) value of 0.26 ± 0.02 is obtained. From this B(GT-) value and the B(GT+) value by a beta-decay experiment, the contribution of the intermediate ground state of 116In to the nuclear matrix element is deduced to be 0.070 ± 0.003. The B(GT-) value obtained herein is a factor of 8 less than that obtained from a previous (3He,t) measurement. This discrepancy, as well as differences in the distribution of low energy GT strength, and the width and peak energy of the GT giant resonance may be explained if the target used in the (3He,t) measurement is a Cd target with natural abundance.

Original languageEnglish
Pages (from-to)76-81
Number of pages6
JournalNuclear Physics A
Volume788
Issue number1-4
DOIs
Publication statusPublished - May 15 2007

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Sasano, M., Sakai, H., Yako, K., Kuboki, H., Miki, K., Noji, S., Wakasa, T., Dozono, M., Sekiguchi, K., Uesaka, T., Kawabata, T., Maeda, Y., Sakaguchi, S., Sasamoto, Y., Suda, K., Itoh, K., Hatanaka, K., Okamura, H., Tamii, A., ... Greenfield, M. B. (2007). Determination of the Gamow-Teller transition strength to 116In(g.s.) by the 116Cd(p,n) reaction at 300 MeV for the study of the nuclear matrix element of the two-neutrino double beta decay. Nuclear Physics A, 788(1-4), 76-81. https://doi.org/10.1016/j.nuclphysa.2007.01.051