The contribution of the three-body process in the nonmesonic weak decay of the 12ΛC hypernucleus

H. Bhang; S. Ajimura; K. Aoki; A. Banu; T. Fukuda; O. Hashimoto; J. I. Hwang; S. Kameoka; B. H. Kang; E. Kim; J. H. 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. Tshoo; Kyo Tsukada; T. Watanabe; H. J. Yim

doi:10.1051/epjconf/20100305013

The contribution of the three-body process in the nonmesonic weak decay of the ¹²_ΛC hypernucleus

H. Bhang, S. Ajimura, K. Aoki, A. Banu, T. Fukuda, O. Hashimoto, J. I. Hwang, S. Kameoka, B. H. Kang, E. Kim, J. H. Kim, T. Maruta, Y. Miura, Y. Miyake, T. Nagae, M. Nakamura, S. N. Nakamura, H. Noumi, S. Okada, Y. OkayasuH. Outa, H. Park, P. K. Saha, Y. Sato, M. Sekimoto, T. Takahashi, H. Tamura, K. Tanida, A. Toyoda, K. Tshoo, Kyo Tsukada, T. Watanabe, H. J. Yim

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Abstract

The serious inconsistency problem between the values of experimental and theoretical Γ_n/Γ_p ratio of the nonmesonic weak decay of Λ hypernuclei has been resolved recently. We have shown that the reason behind the problem was the quenching of the nucleon yields which in turn was due to the contribution of the three-body process. We have measured that the branching ratio of the three-body process in nonmesonic weak decay, 0.29±0.13, is so large that the absolute values of Γ_n and Γ_p must be determined taking account of the contribution of the 3-body process. In this paper, the recent studies toward the finding of the 3-body process via the exclusive coincidence experiments are presented.

Original language	English
Article number	05013
Journal	EPJ Web of Conferences
Volume	3
DOIs	https://doi.org/10.1051/epjconf/20100305013
Publication status	Published - 2010 Apr 12
Event	19th International IUPAP Conference on Few-Body Problems in Physics, Few-Body 2009 - Bonn, Germany Duration: 2009 Aug 31 → 2009 Sep 5

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1051/epjconf/20100305013

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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., Okada, S., ... Yim, H. J. (2010). The contribution of the three-body process in the nonmesonic weak decay of the ¹²_ΛC hypernucleus. EPJ Web of Conferences, 3, [05013]. https://doi.org/10.1051/epjconf/20100305013

Bhang, H, Ajimura, S, Aoki, K, Banu, A, Fukuda, T, Hashimoto, O, Hwang, JI, Kameoka, S, Kang, BH, Kim, E, Kim, JH, Maruta, T, Miura, Y, Miyake, Y, Nagae, T, Nakamura, M, Nakamura, SN, Noumi, H, Okada, S, Okayasu, Y, Outa, H, Park, H, Saha, PK, Sato, Y, Sekimoto, M, Takahashi, T, Tamura, H, Tanida, K, Toyoda, A, Tshoo, K, Tsukada, K, Watanabe, T & Yim, HJ 2010, 'The contribution of the three-body process in the nonmesonic weak decay of the ¹²_ΛC hypernucleus', EPJ Web of Conferences, vol. 3, 05013. https://doi.org/10.1051/epjconf/20100305013

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title = "The contribution of the three-body process in the nonmesonic weak decay of the 12ΛC hypernucleus",

abstract = "The serious inconsistency problem between the values of experimental and theoretical Γn/Γp ratio of the nonmesonic weak decay of Λ hypernuclei has been resolved recently. We have shown that the reason behind the problem was the quenching of the nucleon yields which in turn was due to the contribution of the three-body process. We have measured that the branching ratio of the three-body process in nonmesonic weak decay, 0.29±0.13, is so large that the absolute values of Γn and Γp must be determined taking account of the contribution of the 3-body process. In this paper, the recent studies toward the finding of the 3-body process via the exclusive coincidence experiments are presented.",

author = "H. Bhang and S. Ajimura and K. Aoki and A. Banu and T. Fukuda and O. Hashimoto and Hwang, {J. I.} and S. Kameoka and Kang, {B. H.} and E. Kim and Kim, {J. H.} and T. Maruta and Y. Miura and Y. Miyake and T. Nagae and M. Nakamura and Nakamura, {S. N.} and H. Noumi and S. Okada and Y. Okayasu and H. Outa and H. Park and Saha, {P. K.} and Y. Sato and M. Sekimoto and T. Takahashi and H. Tamura and K. Tanida and A. Toyoda and K. Tshoo and Kyo Tsukada and T. Watanabe and Yim, {H. J.}",

note = "Publisher Copyright: {\textcopyright} Owned by the authors, published by EDP Sciences, 2010.; 19th International IUPAP Conference on Few-Body Problems in Physics, Few-Body 2009 ; Conference date: 31-08-2009 Through 05-09-2009",

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AU - Bhang, H.

AU - Ajimura, S.

AU - Aoki, K.

AU - Banu, A.

AU - Fukuda, T.

AU - Hashimoto, O.

AU - Hwang, J. I.

AU - Kameoka, S.

AU - Kang, B. H.

AU - Kim, E.

AU - Kim, J. H.

AU - Maruta, T.

AU - Miura, Y.

AU - Miyake, Y.

AU - Nagae, T.

AU - Nakamura, M.

AU - Nakamura, S. N.

AU - Noumi, H.

AU - Okada, S.

AU - Okayasu, Y.

AU - Outa, H.

AU - Park, H.

AU - Saha, P. K.

AU - Sato, Y.

AU - Sekimoto, M.

AU - Takahashi, T.

AU - Tamura, H.

AU - Tanida, K.

AU - Toyoda, A.

AU - Tshoo, K.

AU - Tsukada, Kyo

AU - Watanabe, T.

AU - Yim, H. J.

PY - 2010/4/12

Y1 - 2010/4/12

N2 - The serious inconsistency problem between the values of experimental and theoretical Γn/Γp ratio of the nonmesonic weak decay of Λ hypernuclei has been resolved recently. We have shown that the reason behind the problem was the quenching of the nucleon yields which in turn was due to the contribution of the three-body process. We have measured that the branching ratio of the three-body process in nonmesonic weak decay, 0.29±0.13, is so large that the absolute values of Γn and Γp must be determined taking account of the contribution of the 3-body process. In this paper, the recent studies toward the finding of the 3-body process via the exclusive coincidence experiments are presented.

AB - The serious inconsistency problem between the values of experimental and theoretical Γn/Γp ratio of the nonmesonic weak decay of Λ hypernuclei has been resolved recently. We have shown that the reason behind the problem was the quenching of the nucleon yields which in turn was due to the contribution of the three-body process. We have measured that the branching ratio of the three-body process in nonmesonic weak decay, 0.29±0.13, is so large that the absolute values of Γn and Γp must be determined taking account of the contribution of the 3-body process. In this paper, the recent studies toward the finding of the 3-body process via the exclusive coincidence experiments are presented.

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The contribution of the three-body process in the nonmesonic weak decay of the ¹²_ΛC hypernucleus

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