Measurement of the π^- decay width of ⁵_ΛHe

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

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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

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classification ⚛️ nucl-ex

keywords lambdaalphadecaywidthcentraldemonstratedderivedexpected

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We have precisely measured $\Lambda \to p\pi^-$ decay width of \5LHe and demonstrated significantly larger $\alpha$ -$\Lambda$ overlap than expected from the central repulsion $\alpha$-$\Lambda$ potential, which is derived from YNG \Lambda$-nucleon interaction.

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Measurement of the π^- decay width of ⁵_ΛHe

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