精品文档---下载后可任意编辑BESIII 上 Jψ 到 γηη 和 γπ0π0 的分波分析的开题报告【摘要】在 BESIII 实验中，利用 J/ψ 粒子的宽能够同时产生 γηη 和 γπ0π0 事例，二者的讨论有助于深化理解衰变中的强相互作用和量子色动力学中的非对称性。本文将开展 J/ψ 到 γηη 和 γπ0π0 的分波分析，利用相对论协变张量分析方法，讨论质子、中子和介子的角动量耦合关系，解析该过程的谱线结构及背景干扰，得到该衰变过程有关重要参数的实验测量值，可为验证量子色动力学的预言提供实验依据，为未来更深化的讨论奠定基础。【关键词】BESIII，J/ψ，γηη，γπ0π0，分波分析，相对论协变张量分析方法，谱线结构，实验测量值，量子色动力学。【Abstract】In the BESIII experiment, the width of the J/ψ particle enables the simultaneous production of γηη and γπ0π0 events, and the study of these two processes can help to deepen our understanding of the strong interaction and the asymmetry in quantum chromodynamics. In this paper, we will conduct a partial wave analysis of J/ψ→γηη and γπ0π0, using the relativistic covariant tensor analysis method to study the coupling relation of angular momentum between protons, neutrons, and mesons, analyzing the spectral line structure and background interference of the process, obtaining experimental measurement values of important parameters related to this decay process, which can provide experimental evidence for verifying the predictions of quantum chromodynamics and lay the foundation for future more in-depth research.【Keywords】BESIII, J/ψ, γηη, γπ0π0, partial wave analysis, relativistic covariant tensor analysis method, spectral line structure, experimental measurement values, quantum chromodynamics.
