| Investigation of the anomaly in $eta$-photoproduction off the neutron |
| |
| 引用本文： | D. Werthm. Investigation of the anomaly in $eta$-photoproduction off the neutron[J]. 中国物理 C, 2009, 33(12): 1345-1348 |
| |
| 作者姓名： | D. Werthm |
| |
| 作者单位： | Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland; |
| |
| 基金项目： | Supported by Schweizerischer Nationalfonds, DFG, and EU/FP6 |
| |
| 摘 要： | Quasi-free photoproduction of wmesons off the neutron and off the proton has been studied using a deuterium target and bremsstrahlung photons produced by MAMI-C with incident energies up to 1.5 GeV. The wmesons were detected in coincidence with the recoil nucleons thus a fully exclusive measurement was performed. Preliminary results show a bump-like structure in the excitation function for the neutron close to W ≈ 1675 MeV which is not seen for the proton. Considering the experimental resolution and using a Breit-Wigner fit the width of this structure was approximated below 50 MeV.
|
| 关 键 词： | 中子 光生 异常 使用事件 维格纳 关闭 质子 伏特 |
| 收稿时间： | 2009-08-07 |
Investigation of the anomaly in η-photoproduction off the neutron |
| |
| D. Werthmuller. Investigation of the anomaly in η-photoproduction off the neutron[J]. High Energy Physics and Nuclear Physics, 2009, 33(12): 1345-1348 |
| |
| Authors: | D. Werthmuller |
| |
| Affiliation: | Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland |
| |
| Abstract: | photoproduction, eta-meson, narrow nucleon resonance |
| |
| Keywords: | photoproduction eta-meson narrow nucleon resonance |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理 C》浏览原始摘要信息 |
|
点击此处可从《中国物理 C》下载全文 |
