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Measurement of the π- decay width of 5ΛHe

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

nucl-exarXiv:nucl-ex/0402023

Abstract

We have precisely measured Λ pπ- decay width of \5LHe and demonstrated significantly larger α -Λ overlap than expected from the central repulsion α-Λ potential, which is derived from YNG Λ$-nucleon interaction.

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