English

$\Lambda d$ correlations from the $^4$He(stopped-$K^-$,$d$) reaction

Nuclear Experiment 2008-11-26 v3
Authors: T. Suzuki , H. Bhang , J. Chiba , S. Choi , Y. Fukuda , T. Hanaki , R. S. Hayano , M. Iio , T. Ishikawa , S. Ishimoto , T. Ishiwatari , K. Itahashi , M. Iwai , M. Iwasaki , P. Kienle , J. H. Kim , Y. Matsuda , H. Ohnishi , S. Okada , H. Outa , M. Sato , S. Suzuki , D. Tomono , E. Widmann , T. Yamazaki , H. Yim
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Abstract

We have observed an intense high-energy component in an inclusive 4^4He(stopped K−K^-, dd) spectrum. For back-to-back Λd\Lambda d pairs a prominent event cluster has been found just below the m4He+mK−−mnm_{^4\textrm{He}}+m_{K^-}-m_{n} mass threshold in the Λd\Lambda d invariant mass spectrum of Λdn\Lambda dn events, which is evidence for a three-nucleon absorption process of K−K^- in 4^4He. In addition, an appreciable strength is revealed below ∼\sim3220 MeV/c2c^2. Well separated Σ0dn\Sigma^0 dn events show a peak similar to the case of Λdn\Lambda dn.

Cite

@article{arxiv.0709.0996,
  title  = {$\Lambda d$ correlations from the $^4$He(stopped-$K^-$,$d$) reaction},
  author = {T. Suzuki and H. Bhang and J. Chiba and S. Choi and Y. Fukuda and T. Hanaki and R. S. Hayano and M. Iio and T. Ishikawa and S. Ishimoto and T. Ishiwatari and K. Itahashi and M. Iwai and M. Iwasaki and P. Kienle and J. H. Kim and Y. Matsuda and H. Ohnishi and S. Okada and H. Outa and M. Sato and S. Suzuki and D. Tomono and E. Widmann and T. Yamazaki and H. Yim},
  journal= {arXiv preprint arXiv:0709.0996},
  year   = {2008}
}

Comments

4 pages, 4 figures, published in Physical Review C as a Brief Report

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