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arXiv 1108.1867hep-ph
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HERA-根据最新技术水平NLO输入的小x演变的数据

HERA-data in the light of small x evolution with state of the art NLO input

Janne Kuokkanen, Kari Rummukainen, Heribert Weigert

摘要:

HERA的总截面和衍射截面在渐近伪标度区域成功地与JIMWLK演化方程进行了比较。我们提出了一个一致的,同时描述这两种类型的截面,其中包括非线性光学校正的形式运行耦合和能量守恒校正。能量守恒修正的加入允许匹配所有x小于0.02的可用数据,即Q^2为1200 GeV^2。我们讨论了夸克质量的影响,包括魅力,对比渐近和预渐近拟合策略,并调查非微扰的不确定性与碰撞参量的依赖性。

英文摘要:

Both total and diffractive cross sections from HERA are successfully confronted with JIMWLK evolution equations in the asymptotic pseudo-scaling region. We present a consistent, simultaneous description of both types of cross sections that includes NLO corrections in the form of running coupling and energy conservation corrections. The inclusion of energy conservation corrections allows to match all available data with x below .02 i.e. up to Q^2 of 1200 GeV^2. We discuss the effects of quark masses including charm, contrast asymptotic and pre-asymptotic fit strategies, and survey non-perturbative uncertainties related to impact parameter dependence.

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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