Evidence for theΘ+in theγd→K+K−pnreaction by detectingK+K−pairs
| العنوان: | Evidence for theΘ+in theγd→K+K−pnreaction by detectingK+K−pairs |
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| المؤلفون: | Y. Asano, S. C. Wang, A. Wakai, Y. Ohashi, P. M. Shagin, H. Kohri, Masato Yoshimura, T. Ooba, T. Matsumura, D. S. Oshuev, Tsutomu Mibe, M. Miyabe, M. Sumihama, H. Ejiri, Takashi Nakano, Y. Shiino, S. Fukui, Hidetoshi Akimune, M. Fujiwara, Masaharu Nomachi, N. Kumagai, D. S. Ahn, M. Niiyama, K. Horie, Tomoaki Hotta, Takahiro Iwata, K. Kino, Hiroyuki Toyokawa, Y. Kato, M. Yosoi, Chary Rangacharyulu, Y. Miyachi, K. Hicks, T. Matsuda, S. Daté, Haruo Ohkuma, Z. Y. Kim, S. Makino, H. Hasegawa, N. Matsuoka, Yorihito Sugaya, K. Imai, Norihito Muramatsu, H. Fujimura, C. W. Wang, H. Kawai, K. Yonehara, A. Shimizu, Atsushi Sakaguchi, Hajime Shimizu, Takatsugu Ishikawa, R. G. T. Zegers, Y. Toi, J. K. Ahn, W. C. Chang, Tetsuhiko Yorita |
| المصدر: | Physical Review C. 79 |
| بيانات النشر: | American Physical Society (APS), 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | Scattering cross-section, Physics, Nuclear and High Energy Physics, Crystallography, Angular range, Mass distribution, Deuterium, Hyperon, High Energy Physics::Experiment, Invariant mass, Photon energy, Atomic physics |
| الوصف: | The {gamma}d{yields}K{sup +}K{sup -}pn reaction has been studied to search for the evidence of the {theta}{sup +} by detecting K{sup +}K{sup -} pairs at forward angles. The Fermi-motion-corrected nK{sup +} invariant mass distribution shows a narrow peak at 1.524{+-}0.002+0.003 GeV/c{sup 2}. The statistical significance of the peak calculated from a shape analysis is 5.1 {sigma}, and the differential cross section for the {gamma}n{yields}K{sup -}{theta}{sup +} reaction is estimated to be 12{+-}2 nb/sr in the photon energy range from 2.0 to 2.4 GeV in the LEPS angular range by assuming the isotropic production of the {theta}{sup +} in the {gamma}n center-of-mass system. The obtained results support the existence of the {theta}{sup +}. |
| تدمد: | 1089-490X 0556-2813 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::13eb02c0529e1e4d054afe8d56bdbcaf https://doi.org/10.1103/physrevc.79.025210 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........13eb02c0529e1e4d054afe8d56bdbcaf |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1089490X 05562813 |
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