Backward-angle photoproduction of ω and ν ′ mesons from protons in the photon energy range from 1.5 to 3.0 GeV

Y. Morino, Y. Nakatsugawa, M. Yosoi, M. Niiyama, M. Sumihama, T. Nakano, D. S. Ahn, Jung Keun Ahn, S. Ajimura, W. C. Chang, J. Y. Chen, S. Daté, H. Fujimura, S. Fukui, K. Hicks, T. Hiraiwa, T. Hotta, S. H. Hwang, K. Imai, T. IshikawaY. Kato, H. Kawai, M. J. Kim, H. Kohri, Y. Kon, P. J. Lin, K. Mase, Y. Maeda, M. Miyabe, N. Muramatsu, H. Noumi, Y. Ohashi, T. Ohta, M. Oka, J. D. Parker, C. Rangacharyulus, S. Y. Ryu, T. Saito, T. Sawada, H. Shimizu, E. A. Strokovsky, Y. Sugaya, K. Suzuki, K. Tanida, A. Tokiyasu, T. Tomioka, T. Tsunemi, M. Uchida, R. Yamamura, T. Yorita

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Abstract

We report the measurement of differential cross sections for ω and η ' photoproduction from protons at backward angles -1.0< cos Θ<inf>C.M</inf><sup>X</sup>< -0.8) using linearly polarized photons at E<inf>γ</inf> =1.5-3.0GeV. The differential cross sections for ω mesons are larger than the predicted u-channel contribution based on amplitude analysis in the energy range 2.0≤ √s≤ 2.4GeV. The differential cross sections for ω and η ' mesons become closer to the predicted u-channel contribution at √ s>2.4GeV. A bump structure in the √ s dependence of the differential cross sections for η ' mesons was observed at √ s∼2.35GeV.

Original languageEnglish
Article number013D01
JournalProgress of Theoretical and Experimental Physics
Volume2015
Issue number1
DOIs
Publication statusPublished - 2014 Oct 10

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Keywords

  • D24
  • D25

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Morino, Y., Nakatsugawa, Y., Yosoi, M., Niiyama, M., Sumihama, M., Nakano, T., Ahn, D. S., Ahn, J. K., Ajimura, S., Chang, W. C., Chen, J. Y., Daté, S., Fujimura, H., Fukui, S., Hicks, K., Hiraiwa, T., Hotta, T., Hwang, S. H., Imai, K., ... Yorita, T. (2014). Backward-angle photoproduction of ω and ν ′ mesons from protons in the photon energy range from 1.5 to 3.0 GeV. Progress of Theoretical and Experimental Physics, 2015(1), [013D01]. https://doi.org/10.1093/ptep/ptu167