Cross sections and beam asymmetry for K+Σ*- photoproduction from the deuteron at Eγ=1.5-2.4GeV

  • K. Hicks
  • , D. Keller
  • , H. Kohri
  • , D. S. Ahn
  • , J. K. Ahn
  • , H. Akimune
  • , Y. Asano
  • , W. C. Chang
  • , S. Daté
  • , H. Ejiri
  • , S. Fukui
  • , H. Fujimura
  • , M. Fujiwara
  • , S. Hasegawa
  • , T. Hotta
  • , K. Imai
  • , T. Ishikawa
  • , T. Iwata
  • , Y. Kato
  • , H. Kawai
  • Z. Y. Kim, K. Kino, N. Kumagai, S. Makino, T. Matsuda, T. Matsumura, N. Matsuoka, T. Mibe, M. Miyabe, Y. Miyachi, M. Morita, N. Muramatsu, T. Nakano, M. Niiyama, M. Nomachi, Y. Oh, Y. Ohashi, H. Ohkuma, T. Ooba, J. Parker, C. Rangacharyulu, A. Sakaguchi, T. Sasaki, P. M. Shagin, Y. Shiino, A. Shimizu, H. Shimizu, Y. Sugaya, M. Sumihama, Y. Toi, 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

45 引文 斯高帕斯(Scopus)

摘要

The Σ(1385) resonance, or Σ*, is well known as part of the standard baryon decuplet with spin J=32. Measurements of the reaction γp→K+Σ*0 are difficult to extract due to overlap with the nearby Λ(1405) resonance. However, the reaction γn→K+Σ *- has no overlap with the Λ(1405) due to its charge. Here we report the first measurement of cross sections and beam asymmetries for photoproduction of the Σ*- from a deuteron target. The cross sections at forward angles range from 0.4 to 1.2μb, with a broad maximum near Eγ 1.8GeV. The beam asymmetries are negative, in contrast with positive values for the γn→K+Σ- reaction.

原文???core.languages.en_GB???
文章編號012501
期刊Physical Review Letters
102
發行號1
DOIs
出版狀態已出版 - 5 1月 2009

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