| Comment on phase conventions in helicity formalism |
| |
| 作者姓名： | 张锋 高原宁 霍雷 |
| |
| 作者单位： | 1. Department of Physics, Harbin Institute of Technology, Harbin 150001, China;;2. Key Laboratory of Particle \& Radiation Imaging (Tsinghua University), Ministry of Education, Beijing 100084, China;;3. Department of Engineering Physics, Tsinghua University, Beijing 100084, China |
| |
| 基金项目： | Supported by National Natural Science Foundation of China (10775077, 10225522) |
| |
| 摘 要： | Using the sequential decay process m e+e- → J/ψ → ΛΛ, Λ → pπ-, Λ → pπ+ as an example, the procedure for deducing the full angular distribution is illustrated by adopting both the Jacob-Wick and Jackson conventions in the helicity formalism. To make sure that the final physical result is free of phase conventions, we point out that the coefficients that relate the angular momentum states in different coordinate systems of reference frames have to be taken into account properly in the procedure. The fact that those coefficients are constants suggests that the Jackson convention is favorable in dealing with the processes with sequential decays.
|
| 关 键 词： | 形式主义 公约 螺旋 评论 衰变过程 框架系统 角分布 角动量 |
| 收稿时间： | 2010-7-29 |
| 修稿时间： | 2010-11-5 |
Comment on phase conventions in helicity formalism |
| |
| ZHANG Feng , GAO Yuan-Ning , HUO Lei.Comment on phase conventions in helicity formalism[J].High Energy Physics and Nuclear Physics,2011,35(5):426-428. |
| |
| Authors: | ZHANG Feng GAO Yuan-Ning HUO Lei |
| |
| Institution: | ZHANG Feng 1,1) GAO Yuan-Ning 2,3,2) HUO Lei 1 1 Department of Physics,Harbin Institute of Technology,Harbin 150001,China 2 Key Laboratory of Particle & Radiation Imaging (Tsinghua University),Ministry of Education,Beijing 100084,China 3 Department of Engineering Physics,Tsinghua University,China |
| |
| Abstract: | |
| |
| Keywords: | Jacob-Wick convention Jackson convention helicity formalism |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《中国物理 C》浏览原始摘要信息 |
| 点击此处可从《中国物理 C》下载免费的PDF全文 |
|
