| Autor: |
H. Fujimura, A. Wakai, T. Matsumura, S. Daté, N. Matsuoka, Z. Y. Kim, S. Makino, D. S. Ahn, M. Miyabe, D. S. Oshuev, M. Yosoi, K. Yonehara, H. Kawai, Tsutomu Mibe, R. G.T. Zegers, M. Sumihama, C. W. Wang, Y. Asano, Hajime Shimizu, Masaharu Nomachi, P. M. Shagin, M. Morita, K. Imai, Yorihito Sugaya, K. Miwa, T. Matsuda, Hiroyuki Toyokawa, Masato Yoshimura, Yuji Ohashi, T. Ooba, M. Niiyama, Norihito Muramatsu, S. C. Wang, A. I. Titov, Y. Shiino, Hidetoshi Akimune, T. Iwata, M. Fujiwara, Tomoaki Hotta, Takuya Sasaki, K. Kino, K. Hicks, Chary Rangacharyulu, Haruo Ohkuma, Y. Miyachi, T. Nakano, Atsushi Sakaguchi, J. K. Ahn, W. C. Chang, Takatsugu Ishikawa, Y. Toi, N. Kumagai, H. Kohri, H. Ejiri, Tetsuhiko Yorita |
| Rok vydání: |
2005 |
| Předmět: |
|
| Zdroj: |
Physical review letters. 95(18) |
| ISSN: |
0031-9007 |
| Popis: |
Photoproduction of a {phi} meson on protons was studied by means of linearly polarized photons at forward angles in the low-energy region from threshold to E{sub {gamma}}=2.37 GeV. The differential cross sections at t=- vertical bar t vertical bar{sub min} do not increase smoothly as E{sub {gamma}} increases but show a local maximum at around 2.0 GeV. The angular distributions demonstrate that {phi} mesons are photoproduced predominantly by helicity-conserving processes, and the local maximum is not likely due to unnatural-parity processes. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
