arxiv: nucl-ex/0402017 · v1 · submitted 2004-02-24 · ⚛️ nucl-ex

Proton asymmetry in non-mesonic weak decay of light hypernuclei

T.Maruta , S.Ajimura , K.Aoki , A.Banu , H.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 Y.Miura Y.Miyake T.Nagae M.Nakamura S.N.Nakamura H.Noumi S.Okada 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 asymmetrydecayhypernucleilambda-hypernucleinon-mesonicparameterspolarizedproton

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We have obtained the decay asymmetry parameters in non-mesonic weak decay of polarized Lambda-hypernuclei by measuring the proton asymmetry. The polarized Lambda-hypernuclei, 5_Lambda-He, 12_Lambda-C, and 11_Lambda-B, were produced in high statistics via the (pi^+,k^+) reaction at 1.05 GeV/c in the forward angles. Preliminary analysis shows that the decay asymmetry parameters are very small for these s-shell and p-shell hypernuclei.

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Proton asymmetry in non-mesonic weak decay of light hypernuclei

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