在未来的 $e^+e^-$ 对撞机上促使 $J/\psi$ 对光生成的次领先阶相对论和 QCD 校正

Zhi-Guo He
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引用次数: 0

摘要

在非相对论-QCD因式分解的框架内,我们计算了在未来的e^+e^-$对撞机(包括未来的环形轻子对撞机(FCC-ee)、环形电子正负电子对撞机(CEPC)和紧凑线性对撞机(CLIC))上,通过光子-光子对撞,在$\psi(2S)$介子的馈电作用下,促使$J/\psi$对产生的次前沿相对论修正和QCD修正。我们给出了单J/\psi$横动量和速度以及J/\psi$对不变质量的总截面和分布。相对论修正和 QCD 修正都是巨大的负修正。然而,产生率足够大,可以进行有用的实验研究。本文内容可根据知识共享署名 3.0 许可条款使用。如需进一步传播本作品,必须注明作者、作品名称、期刊引文和 DOI。文章由 SCOAP3 资助,由中国物理学会、中国科学院高能物理研究所、中国科学院近代物理研究所和 IOP Publishing Ltd. 授权出版。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Next-to-leading order relativistic and QCD corrections to prompt $J/\psi$ pair photoproduction at future $e^+e^-$ colliders
Within the framework of nonrelativistic-QCD factorization, we calculate both the next-to-leading-order relativistic and QCD corrections to prompt $J/\psi$ pair production, with feeddown from $\psi(2S)$ mesons, via photon-photon collisions at future $e^+e^-$ colliders including the Future Circular Lepton Collider (FCC-ee), the Circular Electron Positron Collider (CEPC), and the Compact Linear Collider (CLIC). We present total cross sections and distributions in single $J/\psi$ transverse momentum and rapidity, and in $J/\psi$ pair invariant mass. The relativistic and QCD corrections both turn out to be large and negative. Yet, the production rates are large enough for useful experimental studies. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.
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