Evidence for a Narrow [Formula presented] Baryon Resonance in Photoproduction from the Neutron

  • T. Nakano
  • , D. S. Ahn
  • , J. K. Ahn
  • , H. Akimune
  • , Y. Asano
  • , W. C. Chang
  • , S. Daté
  • , H. Ejiri
  • , H. Fujimura
  • , M. Fujiwara
  • , K. Hicks
  • , T. Hotta
  • , K. Imai
  • , T. Ishikawa
  • , T. Iwata
  • , H. Kawai
  • , Z. Y. Kim
  • , K. Kino
  • , H. Kohri
  • , N. Kumagai
  • S. Makino, T. Matsumura, N. Matsuoka, T. Mibe, K. Miwa, M. Miyabe, Y. Miyachi, M. Morita, N. Muramatsu, M. Niiyama, M. Nomachi, Y. Ohashi, T. Ooba, H. Ohkuma, D. S. Oshuev, C. Rangacharyulu, A. Sakaguchi, T. Sasaki, P. M. Shagin, Y. Shiino, H. Shimizu, Y. Sugaya, M. Sumihama, H. Toyokawa, A. Wakai, C. W. Wang, S. C. Wang, K. Yonehara, T. Yorita, M. Yoshimura, M. Yosoi, R. G.T. Zegers

研究成果: 雜誌貢獻期刊論文同行評審

10 引文 斯高帕斯(Scopus)

摘要

The [Formula presented] reaction on [Formula presented] has been studied by measuring both [Formula presented] and [Formula presented] at forward angles. A sharp baryon resonance peak was observed at [Formula presented] with a width smaller than [Formula presented] and a Gaussian significance of [Formula presented]. The strangeness quantum number ([Formula presented]) of the baryon resonance is [Formula presented]. It can be interpreted as a molecular meson-baryon resonance or alternatively as an exotic five-quark state ([Formula presented]) that decays into a [Formula presented] and a neutron. The resonance is consistent with the lowest member of an antidecuplet of baryons predicted by the chiral soliton model.

原文???core.languages.en_GB???
期刊Physical Review Letters
91
發行號1
DOIs
出版狀態已出版 - 3 7月 2003

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