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The Weak Decay Widths of Λ Hypernuclei
H. Bhang,S. Ajimura,K. Aoki,A. Banu,T. Fukuda,O. Hashimoto,J. I. Hwang,S. Kameoka,B. H. Kang,E. Kim,김정호,T. Maruta,Y. Miura,Y. Miyake,T. Nagae,M. Nakamura,S. N. Nakamura,H. Noumi,S. Okada,Y. Okayasu,H. 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
We have measured both the mesonic and nonmesonic weak decay widths of ^(12)_ΛC. For the mesonic decay, we have improved the accuracy of Γ_π^0 so that it reduced the error of Γ_(nm) from ≥10% to ≤5%. For the nonmesonic decay, we have solved the long standing Γ_n/Γ_p puzzle by measuring the ratio 0.51 ± 0.14 in the exclusive measurement. At the same time we have measured the width of the 3-body nonmesonic decay Γ_(2N) = 0.27 ± 0.13 for the first time. Combining the accurate Γ_n/Γ_p ratio and the first measured value Γ_(2N), we have finally obtained the Γ_n and Γ_p themselves taking account of the 3-body process. We have measured all the weak decay widths of _(12)_ΛC so that it provides the first complete set of widths for the investigation of ΔS = 1 baryon-baryon weak interaction.
The Weak Decay Widths of ?? Hypernuclei
Bhang, H.,Ajimura, S.,Aoki, K.,Banu, A.,Fukuda, T.,Hashimoto, O.,Hwang, J. I.,Kameoka, S.,Kang, B. H.,Kim, E.,Kim, J. H.,Maruta, T.,Miura, Y.,Miyake, Y.,Nagae, T.,Nakamura, M.,Nakamura, S. N.,Noumi, H Korean Physical Society 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.2