Physics Letters B (Sep 2017)
First measurement of coherent double neutral-pion photoproduction on the deuteron at incident energies below 0.9 GeV
- T. Ishikawa,
- H. Fujimura,
- H. Fukasawa,
- R. Hashimoto,
- Q. He,
- Y. Honda,
- T. Iwata,
- S. Kaida,
- H. Kanda,
- J. Kasagi,
- A. Kawano,
- S. Kuwasaki,
- K. Maeda,
- S. Masumoto,
- M. Miyabe,
- F. Miyahara,
- K. Mochizuki,
- N. Muramatsu,
- A. Nakamura,
- K. Nawa,
- S. Ogushi,
- Y. Okada,
- K. Okamura,
- Y. Onodera,
- K. Ozawa,
- Y. Sakamoto,
- M. Sato,
- H. Shimizu,
- H. Sugai,
- K. Suzuki,
- Y. Tajima,
- Y. Taniguchi,
- Y. Tsuchikawa,
- H. Yamazaki,
- R. Yamazaki,
- H.Y. Yoshida
Affiliations
- T. Ishikawa
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- H. Fujimura
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- H. Fukasawa
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- R. Hashimoto
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- Q. He
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- Y. Honda
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- T. Iwata
- Department of Physics, Yamagata University, Yamagata 990-8560, Japan
- S. Kaida
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- H. Kanda
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
- J. Kasagi
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- A. Kawano
- Department of Information Science, Tohoku Gakuin University, Sendai 981-3193, Japan
- S. Kuwasaki
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- K. Maeda
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
- S. Masumoto
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
- M. Miyabe
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- F. Miyahara
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- K. Mochizuki
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- N. Muramatsu
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- A. Nakamura
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- K. Nawa
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- S. Ogushi
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- Y. Okada
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- K. Okamura
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- Y. Onodera
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- K. Ozawa
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
- Y. Sakamoto
- Department of Information Science, Tohoku Gakuin University, Sendai 981-3193, Japan
- M. Sato
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- H. Shimizu
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- H. Sugai
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- K. Suzuki
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- Y. Tajima
- Department of Physics, Yamagata University, Yamagata 990-8560, Japan
- Y. Taniguchi
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- Y. Tsuchikawa
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- H. Yamazaki
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- R. Yamazaki
- Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
- H.Y. Yoshida
- Department of Physics, Yamagata University, Yamagata 990-8560, Japan
- DOI
- https://doi.org/10.1016/j.physletb.2017.04.010
- Journal volume & issue
-
Vol. 772,
no. C
pp. 398 – 402
Abstract
The total cross sections were measured for coherent double neutral-pion photoproduction on the deuteron at incident energies below 0.9 GeV for the first time. No clear resonance-like behavior is observed in the excitation function for Wγd=2.38–2.61 GeV, where the d⁎(2380) dibaryon resonance observed at COSY is expected to appear. The measured excitation function is consistent with the existing theoretical calculation for this reaction. The upper limit of the total cross section is found to be 0.034 μb for the dibaryon resonance at Wγd=2.37 GeV (90% confidence level) in the γd→π0π0d reaction.
Keywords
