Cross Sections and Beam Asymmetry for K + Σ * − Photoproduction from the Deuteron at E γ = 1.5 – <…
2009; American Physical Society; Volume: 102; Issue: 1 Linguagem: Inglês
10.1103/physrevlett.102.012501
ISSN1092-0145
AutoresK. Hicks, D. M. Keller, H. Kohri, D. S. Ahn, J. K. Ahn, H. Akimune, Y. Asano, W. C. Chang, S. Daté, H. Ejiri, S. Fukui, H. Fujimura, M̄. Fujiwara, S. Hasegawa, T. Hotta, K. Imai, T. Ishikawa, T. Iwata, Yuji Katō, H. Kawai, Z. Y. Kim, K. Kino, N. Kumagai, Shoji Makino, T. Matsuda, T. Matsumura, N. Matsuoka, T. Mibe, M. Miyabe, Y. Miyachi, Masato Morita, N. Muramatsu, T. Nakano, M. Niiyama, M. Nomachi, Yongseok Oh, Yoji Ohashi, H. Ohkuma, T. Ooba, J. D. Parker, C. Rangacharyulu, A. Sakaguchi, T. Sasaki, P. 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, Masaki Yoshimura, M. Yosoi, R. G. T. Zegers,
Tópico(s)Advanced NMR Techniques and Applications
ResumoThe 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 1.2 μb, with a broad maximum near Eγ≃1.8 GeV. The beam asymmetries are negative, in contrast with positive values for the γn→K+Σ− reaction.Received 19 September 2008DOI:https://doi.org/10.1103/PhysRevLett.102.012501©2009 American Physical Society
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