Dimensional regularisation and factorisation schemes in the BFKL equation at subleading level

Dimensional regularisation and factorisation schemes in the BFKL equation at subleading level
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次领先水平 BFKL 方程中的维数正则化和因式分解方案

DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
D. Colferai
D. Colferai
中科院分区:
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文献类型:
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作者:
M. Ciafaloni;D. Colferai

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我们通过研究运行耦合效应以及包含完整的次领先核,研究了 BFKL 方程在 4+2e 维度中生成的反常维度和系数函数。将解决方案的傅立叶表示推广到这种情况后,我们分析了反常维数和系数对胶子密度贡献的 β 相关重整化群分解。在此基础上,我们推导了 Q0 方案相对于 - 方案的归一化因子,包括对其进行 β 相关修正,并且我们概述了完整的次领先贡献的推导。我们还提供了 - 方案中恢复的 γqg 的表达式,该表达式展示了其普遍性并且在求积范围内是明确的。
We study the anomalous dimensions and coefficient functions generated by the BFKL equation in 4+2e dimensions, by investigating both running coupling effects, and the inclusion of the full next-to-leading kernel. After generalising the Fourier representation of the solutions to this case, we analyse the β-dependent renormalisation-group factorisation of anomalous dimension and coefficient contributions to the gluon density. We derive on this basis the normalisation factor of the Q0-scheme with respect to the -scheme, including β-dependent corrections to it, and we outline the derivation of the full next-to-leading contributions. We also provide an expression for the resummed γqg in the -scheme which exhibits its universality and is explicit up to quadratures.
DOI: 10.1016/j.nuclphysb.2004.03.030
发表时间: 2004-03
期刊: --
影响因子: --
作者:
S. Moch;J. Vermaseren;A. Vogt
通讯作者: S. Moch;J. Vermaseren;A. Vogt