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arXiv 1510.02491hep-ph
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深度非弹性散射的魅力

Charm in Deep-Inelastic Scattering

Richard D. Ball, Marco Bonvini, Luca Rottoli

摘要:

我们展示了如何系统地扩展FONLL计划,包括重夸克质量效应DIS占的核子中的内禀魅力分量的可能影响。我们表明,当没有内在的魅力,FONLL是相当于S-ACOT的任何顺序在微扰理论,而当一个内在的魅力组件包括FONLL是相同的ACOT,再次在微扰理论的所有订单。详细讨论了包含顶夸克和底夸克构造变味数方案的问题,给出了构造NNLO的结构函数$F^c_2$、$F^c_L$和$F^c_3$的显式表达式.

英文摘要:

We show how to extend systematically the FONLL scheme for inclusion of heavy quark mass effects in DIS to account for the possible effects of an intrinsic charm component in the nucleon. We show that when there is no intrinsic charm, FONLL is equivalent to S-ACOT to any order in perturbation theory, while when an intrinsic charm component is included FONLL is identical to ACOT, again to all orders in perturbation theory. We discuss in detail the inclusion of top and bottom quarks to construct a variable flavour number scheme, and give explicit expressions for the construction of the structure functions $F^c_2$, $F^c_L$ and $F^c_3$ to NNLO.

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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