pi^0 decay branching ratios of 5_Lambda-He and 12_Lambda-C hypernuclei
  We precisely measured pi^0 branching ratios of 5_Lambda-He and 12_Lambda-C hypernuclei produced via (pi^+,k^+) reaction. Using these pi^0 branching ratios with the pi^- branching ratios and the lifetimes, we obtained the pi^0 decay widths and the non-mesonic weak decay widths at high statistics with the accuracy of ~5 % (stat) for both hypernuclei. 
S.Okada, S.Ajimura, K.Aoki, A.Banu, H.C.Bhang, T.Fukuda, O.Hashimoto,   J.I.Hwang, S.Kameoka, B.H.Kang, E.H.Kim, J.H.Kim, M....