Differential cross section and photon-beam asymmetry for the (gamma)over-right-arrow p -> pi(+) n reaction at forward pi(+) angles at e-gamma=1.5-2.95 gev
文献类型：期刊论文
| 作者 | Kohri, H.1,2; Wang, S. Y.2,3; Shiu, S. H.2,4; Chang, W. C.2; Yanai, Y.1; Ahn, D. S.5; Ahn, J. K.6; Chen, J. Y.7; Date, S.8; Ejiri, H.1 |
| 刊名 | Physical review c
 |
| 出版日期 | 2018-01-22 |
| 卷号 | 97期号:1页码:7 |
| ISSN号 | 2469-9985 |
| DOI | 10.1103/physrevc.97.015205 |
| 通讯作者 | Kohri, h.() |
| 英文摘要 | Differential cross sections and photon-beam asymmetries for the (gamma) over right arrowp -> pi(+) n reaction have been measured for 0.6 < cos theta(pi) < 1 and e-gamma = 1.5-2.95 gev at spring-8/leps. the cross sections monotonically decrease as the photon beam energy increases for 0.6 < cos theta(pi) < 0.9. however, the energy dependence of the cross sections for 0.9 < cos theta(pi) < 1 and e-gamma = 1.5-2.2 gev (w = 1.9-2.2 gev) is different, which may be due to a nucleon or delta resonance. the present cross sections agree well with the previous cross sections measured by other groups and show forward peaking, suggesting significant t-channel contributions in this kinematical region. the asymmetries are found to be positive, which can be explained by rho exchange in the t channel. large positive asymmetries in the small-vertical bar t vertical bar region, where the rho-exchange contribution becomes small, could be explained by introducing p-exchange interference with the s channel. |
| WOS关键词 | LINEARLY POLARIZED PHOTONS ; CHARGED-PION-PHOTOPRODUCTION ; MESON PHOTOPRODUCTION ; PI+ PHOTOPRODUCTION ; NEAR-THRESHOLD ; HYDROGEN ; ENERGIES ; SPRING-8 |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Nuclear |
| 语种 | 英语 |
| WOS记录号 | WOS:000423230200009 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177886 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Kohri, H. |
| 作者单位 | 1.Osaka Univ, Rese Ctr Nucl Phys, Ibaraki, Osaka 5670047, Japan 2.Acad Sinica, Inst Phys, Taipei 11529, Taiwan 3.Univ Chicago, ChemMatCARS, Argonne, IL 60439 USA 4.Natl Cent Univ, Dept Phys, Taoyuan 32001, Taiwan 5.RIKEN, Nishina Ctr, 2-1 Hirosawa, Wako, Saitama 3510198, Japan 6.Korea Univ, Dept Phys, Seoul 02841, South Korea 7.Natl Synchrotron Radiat Res Ctr, Light Source Div, Hsinchu 30076, Taiwan 8.Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795143, Japan 9.Wakayama Med Coll, Wakayama 6418509, Japan 10.Natl Inst Quantum & Radiol Sci & Technol, Tokai, Ibaraki 3191195, Japan |
| 推荐引用方式 GB/T 7714 | Kohri, H.,Wang, S. Y.,Shiu, S. H.,et al. Differential cross section and photon-beam asymmetry for the (gamma)over-right-arrow p -> pi(+) n reaction at forward pi(+) angles at e-gamma=1.5-2.95 gev[J]. Physical review c,2018,97(1):7. |
| APA | Kohri, H..,Wang, S. Y..,Shiu, S. H..,Chang, W. C..,Yanai, Y..,...&Yosoi, M..(2018).Differential cross section and photon-beam asymmetry for the (gamma)over-right-arrow p -> pi(+) n reaction at forward pi(+) angles at e-gamma=1.5-2.95 gev.Physical review c,97(1),7. |
| MLA | Kohri, H.,et al."Differential cross section and photon-beam asymmetry for the (gamma)over-right-arrow p -> pi(+) n reaction at forward pi(+) angles at e-gamma=1.5-2.95 gev".Physical review c 97.1(2018):7. |
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