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arXiv 1407.3783hep-ph
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$α_sv^2$对在$e^+e^-$对撞机上用光子反冲的$η_c$和$χ_{cJ}$产生的修正

$α_sv^2$ corrections to $η_c$ and $χ_{cJ}$ production recoiled with a photon at $e^+e^-$ colliders

Guang-Zhi Xu, Yi-Jie Li, Kui-Yong Liu, Yu-Jie Zhang

摘要:

在NRQCD因式分解的框架下,我们考虑了在BESIII和B-工厂中光子反冲到$\mathcal{O}(α_s v^2)$的$η_c$和$χ_{cJ}$态的产生。修正后,我们重新计算了$η_c(nS)$和$χ_{cJ}(mP)$态的截面。我们认为,寻找$XYZ$态的均匀电荷共轭,如$X(3872)$,$X(3940)$,$X(4160)$,$X(4350)$反冲光子在BESIII可能有助于澄清这些状态的性质。为了完整起见,还讨论了偶电荷共轭的粲偶素在B工厂中与光子反冲的情况。

英文摘要:

We consider the production of the $η_c$ and $χ_{cJ}$ states recoiled with a photon up to $\mathcal{O}(α_s v^2)$ at BESIII and B-factories within the frame of NRQCD factorization. With the corrections, we revisit the numerical calculations to the cross sections for the $η_c(nS)$ and the $χ_{cJ}(mP)$ states. We argue that the search for $XYZ$ states with even charge conjugation such as $X(3872)$, $X(3940)$, $X(4160)$, and $X(4350)$ recoiled with a photon at BESIII may help clarify the nature of these states. For completeness, the production of charmonium with even charge conjugation recoiled with a photon at B factories is also discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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