Backward-angle η photoproduction from protons at Eγ=1.6-2.4

M. Sumihama, D. S. Ahn, Jung Keun Ahn, H. Akimune, Y. Asano, W. C. Chang, S. Daté, H. Ejiri, H. Fujimura, M. Fujiwara, S. Fukui, S. Hasegawa, K. Hicks, T. Hotta, K. Imai, T. Ishikawa, T. Iwata, Y. Kato, H. Kawai, K. Kino & 31 others H. Kohri, N. Kumagai, T. Matsuda, T. Matsumura, T. Mibe, M. Miyabe, N. Muramatsu, T. Nakano, M. Niiyama, M. Nomachi, Y. Ohashi, H. Ohkuma, T. Ooba, D. S. Oshuev, C. Rangacharyulu, A. Sakaguchi, P. M. Shagin, Y. Shiino, A. Shimizu, H. Shimizu, Y. Sugaya, 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 for η photoproduction from protons have been measured at Eγ=1.6-2.4 GeV in the backward direction. A bump structure has been observed above 2.0 GeV in the total energy. No such bump is observed in η',ω, and π0 photoproductions. It is inferred that this unique structure in η photoproduction is due to a baryon resonance with a large ss̄ component that is strongly coupled to the ηN channel.

Original languageEnglish
Article number052201
JournalPhysical Review C - Nuclear Physics
Volume80
Issue number5
DOIs
Publication statusPublished - 2009 Nov 30
Externally publishedYes

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photoproduction
protons
baryon resonance
cross sections
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Sumihama, M., Ahn, D. S., Ahn, J. K., Akimune, H., Asano, Y., Chang, W. C., ... Zegers, R. G. T. (2009). Backward-angle η photoproduction from protons at Eγ=1.6-2.4. Physical Review C - Nuclear Physics, 80(5), [052201]. https://doi.org/10.1103/PhysRevC.80.052201

Backward-angle η photoproduction from protons at Eγ=1.6-2.4. / Sumihama, M.; Ahn, D. S.; Ahn, Jung Keun; Akimune, H.; Asano, Y.; Chang, W. C.; Daté, S.; Ejiri, H.; Fujimura, H.; Fujiwara, M.; Fukui, S.; Hasegawa, S.; Hicks, K.; Hotta, T.; Imai, K.; Ishikawa, T.; Iwata, T.; Kato, Y.; Kawai, H.; Kino, K.; Kohri, H.; Kumagai, N.; Matsuda, T.; Matsumura, T.; Mibe, T.; Miyabe, M.; Muramatsu, N.; Nakano, T.; Niiyama, M.; Nomachi, M.; Ohashi, Y.; Ohkuma, H.; Ooba, T.; Oshuev, D. S.; Rangacharyulu, C.; Sakaguchi, A.; Shagin, P. M.; Shiino, Y.; Shimizu, A.; Shimizu, H.; Sugaya, Y.; 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 C - Nuclear Physics, Vol. 80, No. 5, 052201, 30.11.2009.

Research output: Contribution to journalArticle

Sumihama, M, Ahn, DS, Ahn, JK, Akimune, H, Asano, Y, Chang, WC, Daté, S, Ejiri, H, Fujimura, H, Fujiwara, M, Fukui, S, Hasegawa, S, Hicks, K, Hotta, T, Imai, K, Ishikawa, T, Iwata, T, Kato, Y, Kawai, H, Kino, K, Kohri, H, Kumagai, N, Matsuda, T, Matsumura, T, Mibe, T, Miyabe, M, Muramatsu, N, Nakano, T, Niiyama, M, Nomachi, M, Ohashi, Y, Ohkuma, H, Ooba, T, Oshuev, DS, Rangacharyulu, C, Sakaguchi, A, Shagin, PM, Shiino, Y, Shimizu, A, Shimizu, H, Sugaya, Y, Toi, Y, Toyokawa, H, Wakai, A, Wang, CW, Wang, SC, Yonehara, K, Yorita, T, Yoshimura, M, Yosoi, M & Zegers, RGT 2009, 'Backward-angle η photoproduction from protons at Eγ=1.6-2.4', Physical Review C - Nuclear Physics, vol. 80, no. 5, 052201. https://doi.org/10.1103/PhysRevC.80.052201
Sumihama, M. ; Ahn, D. S. ; Ahn, Jung Keun ; Akimune, H. ; Asano, Y. ; Chang, W. C. ; Daté, S. ; Ejiri, H. ; Fujimura, H. ; Fujiwara, M. ; Fukui, S. ; Hasegawa, S. ; Hicks, K. ; Hotta, T. ; Imai, K. ; Ishikawa, T. ; Iwata, T. ; Kato, Y. ; Kawai, H. ; Kino, K. ; Kohri, H. ; Kumagai, N. ; Matsuda, T. ; Matsumura, T. ; Mibe, T. ; Miyabe, M. ; Muramatsu, N. ; Nakano, T. ; Niiyama, M. ; Nomachi, M. ; Ohashi, Y. ; Ohkuma, H. ; Ooba, T. ; Oshuev, D. S. ; Rangacharyulu, C. ; Sakaguchi, A. ; Shagin, P. M. ; Shiino, Y. ; Shimizu, A. ; Shimizu, H. ; Sugaya, Y. ; Toi, Y. ; Toyokawa, H. ; Wakai, A. ; Wang, C. W. ; Wang, S. C. ; Yonehara, K. ; Yorita, T. ; Yoshimura, M. ; Yosoi, M. ; Zegers, R. G T. / Backward-angle η photoproduction from protons at Eγ=1.6-2.4. In: Physical Review C - Nuclear Physics. 2009 ; Vol. 80, No. 5.
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AU - Sumihama, M.

AU - Ahn, D. S.

AU - Ahn, Jung Keun

AU - Akimune, H.

AU - Asano, Y.

AU - Chang, W. C.

AU - Daté, S.

AU - Ejiri, H.

AU - Fujimura, H.

AU - Fujiwara, M.

AU - Fukui, S.

AU - Hasegawa, S.

AU - Hicks, K.

AU - Hotta, T.

AU - Imai, K.

AU - Ishikawa, T.

AU - Iwata, T.

AU - Kato, Y.

AU - Kawai, H.

AU - Kino, K.

AU - Kohri, H.

AU - Kumagai, N.

AU - Matsuda, T.

AU - Matsumura, T.

AU - Mibe, T.

AU - Miyabe, 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 - Shagin, P. M.

AU - Shiino, Y.

AU - Shimizu, A.

AU - Shimizu, H.

AU - Sugaya, Y.

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 - 2009/11/30

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