Re-analysis of the A(1520) photoproduction reaction
文献类型：期刊论文
| 作者 | Xie, Ju-Jun1,2,3; Wang, En2; Nieves, J.2 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2014-01-31 |
| 卷号 | 89 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.89.015203 |
| 文献子类 | Article |
| 英文摘要 | Based on previous studies that support the important role of the N*(2120)D-13 resonance in the gamma p -> K+ A(1520) reaction, we make a re-analysis of this A(1520) photoproduction reaction taking into account the recent CLAS differential cross-section data. In addition to the contact, t-channel (K) over bar exchange, s-channel nucleon pole, and N*(2120) [previously called N*(2080)] resonance contributions, which have been considered in previous works, we also study the u-channel A(1115) hyperon pole term. The latter mechanism has always been ignored in all theoretical analysis, which has mostly relied on the very forward K+ angular LEPS data. It is shown that when the contributions from the N*(2120) resonance and the A(1115) hyperon are taken into account, both the new CLAS and the previous LEPS data can be simultaneously described. We also show that the contribution from the u-channel A(1115) pole term produces an enhancement for large K+ angles, and it becomes more and more relevant as the photon energy increases, being essential to describe the CLAS differential cross sections at backward angles. Furthermore, we find that the new CLAS data also favor the existence of the N*(2120) resonance and that these measurements can be used to further constrain its properties. |
| WOS关键词 | ELECTROMAGNETIC DECAYS ; QUARK-MODEL ; HYPERON ; RESONANCES ; BARYONS ; STRANGENESS ; THRESHOLD ; EXCHANGE ; MASSES ; STATES |
| 资助项目 | DFG[SFB/TR 16] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000332160300009 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://119.78.100.186/handle/113462/49823]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Xie, Ju-Jun |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Valencia, CSIC, Ctr Mixto, Inst Invest Paterna,Inst Fis Corpuscular IFIC, E-46071 Valencia, Spain 3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Ju-Jun,Wang, En,Nieves, J.. Re-analysis of the A(1520) photoproduction reaction[J]. PHYSICAL REVIEW C,2014,89. |
| APA | Xie, Ju-Jun,Wang, En,&Nieves, J..(2014).Re-analysis of the A(1520) photoproduction reaction.PHYSICAL REVIEW C,89. |
| MLA | Xie, Ju-Jun,et al."Re-analysis of the A(1520) photoproduction reaction".PHYSICAL REVIEW C 89(2014). |
入库方式： OAI收割
来源：近代物理研究所
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