Production of twin λ-hypernuclei from ξ- hyperon capture at rest

A. Ichikawa, J. K. Ahn, H. Akikawa, S. Aoki, K. Arai, S. Y. Bahk, K. M. Baik, B. Bassalleck, J. H. Chung, M. S. Chung, K. Hoshino, M. Ieiri, K. Imai, Y. H. Iwata, Y. S. Iwata, H. Kanda, M. Kaneko, T. Kawai, C. O. Kim, J. Y. KimS. J. Kim, S. H. Kim, Y. Kondo, T. Kouketsu, Y. L. Lee, J. W.C. McNabb, M. Mitsuhara, Y. Nagase, C. Nagoshi, K. Nakazawa, H. Noumi, S. Ogawa, H. Okabe, K. Oyama, H. M. Park, I. G. Park, J. Parker, Y. S. Ra, J. T. Rhee, A. Rusek, H. Shibuya, K. S. Sim, P. K. Saha, D. Seki, M. Sekimoto, J. S. Song, H. Takahashi, T. Takahashi, F. Takeutchi, H. Tanaka, K. Tanida, J. Tojo, H. Torii, S. Torikai, N. Ushida, K. Yamamoto, N. Yasuda, J. T. Yang, C. J. Yoon, C. S. Yoon, M. Yosoi, T. Yoshida, L. Zhu

研究成果: Article

23 被引用数 (Scopus)

抄録

A hybrid emulsion experiment was carried out to study double-strangeness nuclei produced via ξ- hyperon capture at rest with the expectation of ten times larger statistics than previous experiments. We have analyzed 5% of the total emulsion and found one "twin-hypernuclei" event involving the emission of two single-λ hypernuclei and a nuclear fragment from a ξ- hyperon stopping point. The event is interpreted as the decay of a ξ- + 14N atomic system to λ/5 He + λ/5 He + 4 He + neutron. The species of the ξ- -atom and the fragmentation products are uniquely identified for the first time for twin-hypernuclei events. Combined with the results from a past hybrid-emulsion experiment, one double-λ hypernucleus and three twin-hypernuclei events have been found from ξ- captures on light emulsion nuclei. The ratio of the detected rate of double-λ hypernuclei to that of twin-hypernuclei is compared with theoretical estimates.

本文言語English
ページ(範囲)37-46
ページ数10
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
500
1-2
DOI
出版ステータスPublished - 2001 2 15

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

フィンガープリント 「Production of twin λ-hypernuclei from ξ<sup>-</sup> hyperon capture at rest」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル