arxiv: nucl-ex/0402022 · v1 · submitted 2004-02-26 · ⚛️ nucl-ex

pi⁰ decay branching ratios of 5_Lambda-He and 12_Lambda-C hypernuclei

S.Okada , S.Ajimura , K.Aoki , A.Banu , H.C.Bhang , T.Fukuda , O.Hashimoto , J.I.Hwang

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S.Kameoka B.H.Kang E.H.Kim J.H.Kim M.J.Kim T.Maruta Y.Miura Y.Miyake T.Nagae M.Nakamura S.N.Nakamura H.Noumi Y.Okayasu H.Outa H.Park P.K.Saha Y.Sato M.Sekimoto T.Takahashi H.Tamura K.Tanida A.Toyoda K.Tsukada T.Watanabe H.J.Yim

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keywords branchingratiosdecayhypernucleilambda-clambda-hewidthsaccuracy

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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.

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pi⁰ decay branching ratios of 5_Lambda-He and 12_Lambda-C hypernuclei

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