Photoproduction of $η$-mesons off C and Cu nuclei for photon energies below 1.1 GeV

T. Kinoshita; H. Yamazaki; H. Fukasawa; K. Hirota; T. Ishikawa; J. Kasagi; A. Kato; T. Katsuyama; K. Kino; F. Miyahara; T. Nakabayashi; K. Nawa; K. Okamura; Y. Saitoh; K. Satou; M. Sengoku; H. Shimizu; K. Suzuki; S. Suzuki; T. Terasawa; H. Kanda; K. Maeda; T. Takahashi; Y. Aruga; T. Fujinoya; A. Iijima; M. Itaya; Y. Ito; T. Iwata; H. Kato; T. Kawamura; T. Michigami; M. Moriya; T. Sasaki; Y. Tajima; S. Takita; T. Noma; M. Yamamoto; H. Y. Yoshida; Y. Yoshida; O. Konno; T. Maruyama; T. Yorita

doi:10.1016/j.physletb.2006.05.088

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Photoproduction of $η$-mesons off C and Cu nuclei for photon energies below 1.1 GeV

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Abstract

The $η$-meson photoproduction cross sections have been measured on the C and Cu targets for the photon energies between 600 and 1100 MeV to investigate the behavior of the $S_{11}$(1535) resonance in a nucleus. The excitation functions of the cross section as well as the angular and momentum distributions of $η$-mesons are in quantitative agreement with the Quantum Molecular Dynamics (QMD) model calculations in which the $η$-meson emission processes other than the $S_{11}$(1535) resonance are also incorporated as proposed in the $η$-MAID model. It is shown that the excitation of the $D_{15}$(1675) resonance might play an important role for $E_γ>900$ MeV.

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T. Kinoshita, H. Yamazaki, H. Fukasawa, K. Hirota, T. Ishikawa, J. Kasagi, A. Kato, T. Katsuyama, K. Kino, F. Miyahara, T. Nakabayashi, K. Nawa, K. Okamura, Y. Saitoh, K. Satou, M. Sengoku, H. Shimizu, K. Suzuki, S. Suzuki, T. Terasawa, H. Kanda, K. Maeda, T. Takahashi, Y. Aruga, T. Fujinoya, A. Iijima, M. Itaya, Y. Ito, T. Iwata, H. Kato, T. Kawamura, T. Michigami, M. Moriya, T. Sasaki, Y. Tajima, S. Takita, T. Noma, M. Yamamoto, H. Y. Yoshida, Y. Yoshida, O. Konno, T. Maruyama, T. Yorita. 2005-09-16. Photoproduction of $η$-mesons off C and Cu nuclei for photon energies below 1.1 GeV. https://doi.org/10.1016/j.physletb.2006.05.088

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