Differential cross section and photon-beam asymmetry for the γ→n→K+Σ- Reaction at Eγ=1.5-2.4GeV

H. Kohri, D. S. Ahn, Jung Keun Ahn, H. Akimune, Y. Asano, W. C. Chang, S. Date', H. Ejiri, S. Fukui, H. Fujimura, M. Fujiwara, S. Hasegawa, K. Hicks, T. Hotta, K. Imai, T. Ishikawa, T. Iwata, H. Kawai, Z. Y. Kim, K. KinoN. Kumagai, S. Makino, T. Mart, T. Matsuda, T. Matsumura, N. Matsuoka, T. Mibe, M. Miyabe, Y. Miyachi, M. Morita, N. Muramatsu, T. Nakano, M. Niiyama, M. Nomachi, Y. Ohashi, H. Ohkuma, T. Ooba, D. S. Oshuev, 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

Research output: Contribution to journalArticle

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Abstract

Differential cross sections and photon-beam asymmetries have been measured for the γ→n→K+Σ- and γ→p→K+Σ0 reactions separately using liquid deuterium and hydrogen targets with incident linearly polarized photon beams of Eγ=1.5-2.4GeV at 0. 6<cos¡ΘcmK<1. The cross section ratio of σK+Σ-/ σK+Σ0, expected to be 2 on the basis of the isospin 1/2 exchange, is found to be close to 1. For the K+Σ- reaction, large positive asymmetries are observed, indicating the dominance of K* exchange. The large difference between the asymmetries for the K+Σ- and K+Σ0 reactions cannot be explained by simple theoretical considerations based on Regge model calculations.

Original languageEnglish
Article number082003
JournalPhysical Review Letters
Volume97
Issue number8
DOIs
Publication statusPublished - 2006 Aug 31
Externally publishedYes

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photon beams
asymmetry
cross sections
deuterium
hydrogen
liquids

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Differential cross section and photon-beam asymmetry for the γ→n→K+Σ- Reaction at Eγ=1.5-2.4GeV. / Kohri, H.; Ahn, D. S.; Ahn, Jung Keun; Akimune, H.; Asano, Y.; Chang, W. C.; Date', S.; Ejiri, H.; Fukui, S.; Fujimura, H.; Fujiwara, M.; Hasegawa, S.; Hicks, K.; Hotta, T.; Imai, K.; Ishikawa, T.; Iwata, T.; Kawai, H.; Kim, Z. Y.; Kino, K.; Kumagai, N.; Makino, S.; Mart, T.; Matsuda, T.; Matsumura, T.; Matsuoka, N.; Mibe, T.; Miyabe, M.; Miyachi, Y.; Morita, M.; Muramatsu, N.; Nakano, T.; Niiyama, M.; Nomachi, M.; Ohashi, Y.; Ohkuma, H.; Ooba, T.; Oshuev, D. S.; Rangacharyulu, C.; Sakaguchi, A.; Sasaki, T.; Shagin, P. M.; Shiino, Y.; Shimizu, A.; Shimizu, H.; Sugaya, Y.; Sumihama, M.; Toi, Y.; Toyokawa, H.; Wakai, A.; Wang, C. W.; Wang, S. C.; Yonehara, K.; Yorita, T.; Yoshimura, M.; Yosoi, M.; Zegers, R. G T.

In: Physical Review Letters, Vol. 97, No. 8, 082003, 31.08.2006.

Research output: Contribution to journalArticle

Kohri, H, Ahn, DS, Ahn, JK, Akimune, H, Asano, Y, Chang, WC, Date', S, Ejiri, H, Fukui, S, Fujimura, H, Fujiwara, M, Hasegawa, S, Hicks, K, Hotta, T, Imai, K, Ishikawa, T, Iwata, T, Kawai, H, Kim, ZY, Kino, K, Kumagai, N, Makino, S, Mart, T, Matsuda, T, Matsumura, T, Matsuoka, N, Mibe, T, Miyabe, M, Miyachi, Y, Morita, M, Muramatsu, N, Nakano, T, Niiyama, M, Nomachi, M, Ohashi, Y, Ohkuma, H, Ooba, T, Oshuev, DS, Rangacharyulu, C, Sakaguchi, A, Sasaki, T, Shagin, PM, Shiino, Y, Shimizu, A, Shimizu, H, Sugaya, Y, Sumihama, M, Toi, Y, Toyokawa, H, Wakai, A, Wang, CW, Wang, SC, Yonehara, K, Yorita, T, Yoshimura, M, Yosoi, M & Zegers, RGT 2006, 'Differential cross section and photon-beam asymmetry for the γ→n→K+Σ- Reaction at Eγ=1.5-2.4GeV', Physical Review Letters, vol. 97, no. 8, 082003. https://doi.org/10.1103/PhysRevLett.97.082003
Kohri, H. ; Ahn, D. S. ; Ahn, Jung Keun ; Akimune, H. ; Asano, Y. ; Chang, W. C. ; Date', S. ; Ejiri, H. ; Fukui, S. ; Fujimura, H. ; Fujiwara, M. ; Hasegawa, S. ; Hicks, K. ; Hotta, T. ; Imai, K. ; Ishikawa, T. ; Iwata, T. ; Kawai, H. ; Kim, Z. Y. ; Kino, K. ; Kumagai, N. ; Makino, S. ; Mart, T. ; Matsuda, T. ; Matsumura, T. ; Matsuoka, N. ; Mibe, T. ; Miyabe, M. ; Miyachi, Y. ; Morita, M. ; Muramatsu, N. ; Nakano, T. ; Niiyama, M. ; Nomachi, M. ; Ohashi, Y. ; Ohkuma, H. ; Ooba, T. ; Oshuev, D. S. ; Rangacharyulu, C. ; Sakaguchi, A. ; Sasaki, T. ; Shagin, P. M. ; Shiino, Y. ; Shimizu, A. ; Shimizu, H. ; Sugaya, Y. ; Sumihama, M. ; Toi, Y. ; Toyokawa, H. ; Wakai, A. ; Wang, C. W. ; Wang, S. C. ; Yonehara, K. ; Yorita, T. ; Yoshimura, M. ; Yosoi, M. ; Zegers, R. G T. / Differential cross section and photon-beam asymmetry for the γ→n→K+Σ- Reaction at Eγ=1.5-2.4GeV. In: Physical Review Letters. 2006 ; Vol. 97, No. 8.
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T1 - Differential cross section and photon-beam asymmetry for the γ→n→K+Σ- Reaction at Eγ=1.5-2.4GeV

AU - Kohri, H.

AU - Ahn, D. S.

AU - Ahn, Jung Keun

AU - Akimune, H.

AU - Asano, Y.

AU - Chang, W. C.

AU - Date', S.

AU - Ejiri, H.

AU - Fukui, S.

AU - Fujimura, H.

AU - Fujiwara, M.

AU - Hasegawa, S.

AU - Hicks, K.

AU - Hotta, T.

AU - Imai, K.

AU - Ishikawa, T.

AU - Iwata, T.

AU - Kawai, H.

AU - Kim, Z. Y.

AU - Kino, K.

AU - Kumagai, N.

AU - Makino, S.

AU - Mart, T.

AU - Matsuda, T.

AU - Matsumura, T.

AU - Matsuoka, N.

AU - Mibe, T.

AU - Miyabe, M.

AU - Miyachi, Y.

AU - Morita, M.

AU - Muramatsu, N.

AU - Nakano, T.

AU - Niiyama, M.

AU - Nomachi, M.

AU - Ohashi, Y.

AU - Ohkuma, H.

AU - Ooba, T.

AU - Oshuev, D. S.

AU - Rangacharyulu, C.

AU - Sakaguchi, A.

AU - Sasaki, T.

AU - Shagin, P. M.

AU - Shiino, Y.

AU - Shimizu, A.

AU - Shimizu, H.

AU - Sugaya, Y.

AU - Sumihama, M.

AU - Toi, Y.

AU - Toyokawa, H.

AU - Wakai, A.

AU - Wang, C. W.

AU - Wang, S. C.

AU - Yonehara, K.

AU - Yorita, T.

AU - Yoshimura, M.

AU - Yosoi, M.

AU - Zegers, R. G T

PY - 2006/8/31

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