Proton asymmetry in non-mesonic weak decay of light hypernuclei

We have obtained the decay asymmetry parameters in non-mesonic weak decay of polarized Λ-hypernuclei by measuring the proton asymmetry. The polarized Λ-hypernuclei, 5 Λ He, 12 Λ C, and 11 Λ B, were produced in high statistics via the ( π + , K + ) reaction at 1.05 GeV/ c in the forward angles. Preli...

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Published in:Nuclear physics. A 2005-05, Vol.754, p.168-172
Main Authors: Maruta, T., Ajimura, S., Aoki, K., Banu, A., Bhang, H., Fukuda, T., Hashimoto, O., Hwang, J.I., Kameoka, S., Kang, B.H., Kim, E.H., Kim, J.H., Kim, M.J., Miura, Y., Miyake, Y., Nagae, T., Nakamura, M., Nakamura, S.N., Noumi, H., Okada, S., Okayasu, Y., Outa, H., Park, H., Saha, P.K., Sato, Y., Sekimoto, M., Takahashi, T., Tamura, H., Tanida, K., Toyoda, A., Tsukada, K., Watanabe, T., Yim, H.J.
Format: Article
Language:English
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Summary:We have obtained the decay asymmetry parameters in non-mesonic weak decay of polarized Λ-hypernuclei by measuring the proton asymmetry. The polarized Λ-hypernuclei, 5 Λ He, 12 Λ C, and 11 Λ B, were produced in high statistics via the ( π + , 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.
ISSN:0375-9474
DOI:10.1016/j.nuclphysa.2005.02.159