Analysis of recent CLAS data on Sigma*(1385) photoproduction off a neutron target
文献类型：期刊论文
| 作者 | He, J; Haberzettl, H; He, J (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.; Wang, XY; He, J (reprint author), Chinese Acad Sci, Inst Modern Phys, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China.; He, J (reprint author), Lanzhou Univ, Lanzhou 730000, Peoples R China.; He, J (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2016 |
| 卷号 | 93期号:4页码:45204 |
| DOI | http://dx.doi.org/10.1103/PhysRevC.93.045204 |
| 英文摘要 | Based on recent experimental data obtained by the CLAS Collaboration, the Sigma(1385) photoproduction off a neutron target at laboratory photon energies E-gamma up to 2.5 GeV is investigated in an effective Lagrangian approach including s-, u-, and t-channel Born-term contributions. The present calculation does not take into account any explicit s-channel baryon-resonance contributions; however, in the spirit of duality, we include t-channel exchanges of mesonic Regge trajectories. The onset of the Regge regime is controlled by smoothly interpolating between Feynman-type single-meson exchanges and full-fledged Regge-trajectory exchanges. Gauge invariance broken by the Regge treatment is fully restored by introducing contact-type interaction currents that result from the implementation of local gauge invariance in terms of generalized Ward-Takahashi identities. The cross sections for the gamma n -> K (+) Sigma*(1385)(-) reaction are calculated and compared with experimental results from the CLAS and LEPS collaborations. Despite its simplicity, the present theoretical approach provides a good description of the main features of the data. However, the parameters fitted to the data show that the gauge-invariance-restoring contact term plays a large role, which may point to large contributions from final-state interactions. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/21692]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | He, J (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.; He, J (reprint author), Chinese Acad Sci, Inst Modern Phys, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China.; He, J (reprint author), Lanzhou Univ, Lanzhou 730000, Peoples R China.; He, J (reprint author), 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 | He, J,Haberzettl, H,He, J ,et al. Analysis of recent CLAS data on Sigma*(1385) photoproduction off a neutron target[J]. PHYSICAL REVIEW C,2016,93(4):45204. |
| APA | He, J.,Haberzettl, H.,He, J .,Wang, XY.,He, J .,...&He, J .(2016).Analysis of recent CLAS data on Sigma*(1385) photoproduction off a neutron target.PHYSICAL REVIEW C,93(4),45204. |
| MLA | He, J,et al."Analysis of recent CLAS data on Sigma*(1385) photoproduction off a neutron target".PHYSICAL REVIEW C 93.4(2016):45204. |
入库方式： OAI收割
来源：理论物理研究所
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