Study of the a(1)(1260) resonance in the gamma p -> pi(+)pi(+)pi(-)n reaction | |
Zhang, Xu1,2; Xie, Ju-Jun1,2 | |
刊名 | CHINESE PHYSICS C |
2019-06-01 | |
卷号 | 43期号:6页码:6 |
关键词 | photoproduction mass distributions total cross-section a(1)(1260) |
ISSN号 | 1674-1137 |
DOI | 10.1088/1674-1137/43/6/064104 |
通讯作者 | Xie, Ju-Jun(xiejujun@impcas.ac.cn) |
英文摘要 | Within an effective Lagrangian approach and resonance model, we study the gamma p -> a(1) (1260)(+)n and gamma p -> pi(+)pi(+)pi(-)n reactions via the pi-exchange mechanism. For the gamma p -> pi(+)pi(+)pi(-)n reaction, we perform a calculation of the differential and total cross-sections by considering the contributions of the a(1)(1260) intermediate resonance decaying into rho pi and then into pi(+)pi(+)pi(-). Besides, the non-resonance process is also considered. With a lower mass of a(1)(1260), the experimental data for the invariant pi(+)pi(+)pi(-) mass distributions can be fairly well reproduced. For the gamma p -> a(1)(1260)(+)n reaction, with the model parameters, the total cross-section is of the order of 10 mu b at the photon beam energy E-gamma similar to 2.5 GeV. It is expected that the model calculations in this work could be tested by future experiments. |
资助项目 | National Natural Science Foundation of China[11475227] ; National Natural Science Foundation of China[11735003] ; Youth Innovation Promotion Association CAS[2016367] |
WOS关键词 | PHOTOPRODUCTION ; MESON ; WIDTH ; VECTOR ; PHOTONS ; CHAMBER ; DECAYS ; MODEL ; TAU ; ETA |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000468501700007 |
资助机构 | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.186/handle/113462/133500] |
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, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 101408, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Xu,Xie, Ju-Jun. Study of the a(1)(1260) resonance in the gamma p -> pi(+)pi(+)pi(-)n reaction[J]. CHINESE PHYSICS C,2019,43(6):6. |
APA | Zhang, Xu,&Xie, Ju-Jun.(2019).Study of the a(1)(1260) resonance in the gamma p -> pi(+)pi(+)pi(-)n reaction.CHINESE PHYSICS C,43(6),6. |
MLA | Zhang, Xu,et al."Study of the a(1)(1260) resonance in the gamma p -> pi(+)pi(+)pi(-)n reaction".CHINESE PHYSICS C 43.6(2019):6. |
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