Vector mesons and electromagnetic form factor of the Lambda hyperon
文献类型：期刊论文
| 作者 | Cao, X5; Dai, JP; Xie, YP |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2018 |
| 卷号 | 98期号:9页码:94006 |
| 关键词 | TIME-LIKE REGION STATE CHROMODYNAMICS P(P)OVER-BAR PSI(3770) E(+)E(-) VICINITY Y(2175) HYBRID |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.98.094006 |
| 英文摘要 | The measured electromagnetic form factors of A hyperon in the timelike region are significantly deviated from pQCD prediction. We attribute the nonvanishing cross section near threshold to be the contribution of below-threshold phi(2170) state, supporting its exotic structure. Above the threshold, we find significant role of a wide vector meson with the mass of around 2.34 GeV, which would be the same state present in pp annihilation reactions. As a result, we give a satisfactory description of the behavior of existing data without modifying pQCD expectation. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/22787]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Shanghai Key Lab Particle Phys & Cosmol, MOE Key Lab Particle Phys Astrophys & Cosmol, INPAC, Shanghai 200240, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Ctr Nucl Matter Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 5.Chinese Acad Sci, CAS Key Lab High Precis Nucl Spect, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, X,Dai, JP,Xie, YP. Vector mesons and electromagnetic form factor of the Lambda hyperon[J]. PHYSICAL REVIEW D,2018,98(9):94006. |
| APA | Cao, X,Dai, JP,&Xie, YP.(2018).Vector mesons and electromagnetic form factor of the Lambda hyperon.PHYSICAL REVIEW D,98(9),94006. |
| MLA | Cao, X,et al."Vector mesons and electromagnetic form factor of the Lambda hyperon".PHYSICAL REVIEW D 98.9(2018):94006. |
入库方式： OAI收割
来源：理论物理研究所
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