arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.07317hep-ph
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光子-光子碰撞中产生$B_c$对的NLO修正

NLO QCD corrections to $B_c$-pair production in photon-photon collision

Zi-Qiang Chen, Hao Yang, Cong-Feng Qiao

摘要:

采用非相对论量子色动力学(NRQCD)分解方法,在次领先阶(NLO)精度下研究了高能光子-光子相互作用中$B_c$介子对(包括赝标态和矢量态)的产生.在未来的$e^+e^-$对撞机与$\sqrt{s}=250$ GeV和$500$ GeV的相应的截面进行评估。数值结果表明,非线性光学修正的加入将大大抑制尺度依赖性,提高预报的可靠性。除了唯象意义外,该过程的非线性QCD计算还存在一些技术问题,本文对这些问题进行了详细的阐述,并可能适用于其他相关的研究。

英文摘要:

The $B_c$ meson pair, including pairs of both pseudoscalar states and vector states, productions in high energy photon-photon interaction are investigated at the next-to-leading order (NLO) accuracy in the nonrelativistic quantum chromodynamics (NRQCD) factorization formalism. The corresponding cross sections at the future $e^+e^-$ colliders with $\sqrt{s}=250$ GeV and $500$ GeV are evaluated. Numerical result indicates that the inclusion of the NLO corrections shall greatly suppress the scale dependence and enhance the prediction reliability. In addition to the phenomenological meaning, the NLO QCD calculation of this process subjects to certain technical issues, which are elucidated in details and might be applicable to other relevant investigations.

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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