Spin-orbit amplitudes for decays with arbitrary spin
文献类型：期刊论文
| 作者 | Li, Xiao-Yu; Dong, Xiang-Kun; Jing, Hao-Jie |
| 刊名 | NUCLEAR PHYSICS A
 |
| 出版日期 | 2023 |
| 卷号 | 1040页码:122761 |
| ISSN号 | 0375-9474 |
| 关键词 | RIGHT FORMALISM PHOTOPRODUCTION PARTICLES SEARCH ETA |
| DOI | 10.1016/j.nuclphysa.2023.122761 |
| 英文摘要 | In this paper, we propose a method to construct the decay amplitudes in the orbital (L) and spin (S) coupling scheme for particles with arbitrary spins. For the 1 -> 2 decay with only massive particles involved, the angular dependence is completely encoded in the angular momentum part, and the spins of daughter particles are coupled in the rest frame of the mother particle, which contributes only a constant factor. For the sequential decay, the total amplitude is constructed by the two 1 -> 2 amplitudes evaluated in the rest frame of their own mother particles, and then they are transformed to the common frame, usually chosen as the laboratory frame, by certain Lorentz transformations. In this way, it is easy to add the amplitudes of possible different decay chains coherently. If massless particles show up in the final states, the polarizations are expressed in helicity basis and the amplitudes are modified correspondingly. (c) 2023 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/28077]  |
| 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.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.[Li, Xiao-Yu 3.Dong, Xiang-Kun 4.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiao-Yu,Dong, Xiang-Kun,Jing, Hao-Jie. Spin-orbit amplitudes for decays with arbitrary spin[J]. NUCLEAR PHYSICS A,2023,1040:122761. |
| APA | Li, Xiao-Yu,Dong, Xiang-Kun,&Jing, Hao-Jie.(2023).Spin-orbit amplitudes for decays with arbitrary spin.NUCLEAR PHYSICS A,1040,122761. |
| MLA | Li, Xiao-Yu,et al."Spin-orbit amplitudes for decays with arbitrary spin".NUCLEAR PHYSICS A 1040(2023):122761. |
入库方式： OAI收割
来源：理论物理研究所
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