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arXiv 1106.4486hep-phhep-th
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有限阶微扰QCD计算的因式分解格式依赖性研究

Investigation of the factorization scheme dependence of finite order perturbative QCD calculations

Karel Kolar

摘要:

分析了与部分子分布函数定义有关的自由度,导出了部分子分布函数和硬散射截面与重整化和因式分解过程中的非物理量之间的关系式。通过相应的高阶分裂函数的因式分解方案的规格的问题进行了详细讨论。本文给出了一种对构造相容非线性光学蒙特卡罗事件发生器有用的零分解方案的实用性的数值分析。

英文摘要:

The freedom associated with the definition of parton distribution functions is analyzed and formulae governing the dependence of parton distribution functions and hard scattering cross-sections on unphysical quantities associated with the renormalization and factorization procedure are derived. The issue of the specification of factorization schemes via the corresponding higher order splitting functions is discussed in detail. A numerical analysis of the practical applicability of the so called ZERO factorization scheme, which could be useful for the construction of consistent NLO Monte Carlo event generators, is presented.

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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