短距离相互作用在 e+e-→γX(3872) 中的作用

IF 5.3 2区 物理与天体物理 Q1 Physics and Astronomy
Ming-Xiao Duan
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引用次数: 0

摘要

在这项研究中,我们分析了e+e-→γJ/ψω过程的截面数据,探讨了辐射转变Y(4200)→γX(3872)的短程和长程相互作用。我们通过cc¯成分之间的E1转变研究了短程效应,并通过强子环图研究了长程效应。我们的数值分析表明,短距相互作用在辐射转变中的作用明显大于长距相互作用。这一发现强调了初始态和最终态中的紧凑cc¯成分对于准确理解截面σ[e+e-→γJ/ψω]的重要性。此外,借助相对分支比 R,我们估算了实验研究中隐含的Γ[Y(4200)→γX(3872)]。最后,我们还讨论了截面数据中可能存在的ψ(4040)信号。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Role of the short-distance interaction in e+e−→γX(3872)

Role of the short-distance interaction in e+e−→γX(3872)
In this study, we analyze the cross-section data from the e+eγJ/ψω process to explore both short-distance and long-distance interactions for the radiative transition Y(4200)γX(3872). We investigate the short-distance effects through the E1 transition among the cc¯ components, and the long-distance effects via hadronic loop diagrams. Our numerical analysis reveals that short-distance interactions play a significantly larger role in the radiative transition than that of the long-distance interactions. This finding underscores the importance of the compact cc¯ components in both the initial and the final states for accurately understanding the cross-section σ[e+eγJ/ψω]. Furthermore, with the help of relative branch ratio R we estimate the Γ[Y(4200)γX(3872)] implied in the experimental study. Finally, we also discuss the possible existence of the ψ(4040) signal within the cross-section data.
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来源期刊
Physical Review D
Physical Review D 物理-天文与天体物理
CiteScore
9.20
自引率
36.00%
发文量
0
审稿时长
2 months
期刊介绍: Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.
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