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arXiv 1302.7202hep-phhep-ex
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NNLL上产生胶子对的QCD阈值再确认现象

Phenomenology of QCD threshold resummation for gluino pair production at NNLL

Torsten Pfoh

摘要:

我们研究了阈值重算对包含强子产生截面的影响,与精确的次-首阶截面和次-次-首阶近似进行了比较。在这里,我们应用最近在经典的梅林空间形式主义的公式。此外,我们给出了替代动量空间形式主义的分析输入,并讨论了数值实现的关键点。我们发现,软重算保持强子截面接近固定的次-首阶结果。

英文摘要:

We examine the impact of threshold resummation for the inclusive hadronic production cross section of gluino pairs at next-to-next-to-leading-logarithmic accuracy, compared to the exact next-to-leading-order cross section and the next-to-next-to-leading-order approximation. Here, we apply formulas derived recently in the classical Mellin-space formalism. Moreover, we give the analytic input for the alternative momentum-space formalism and discuss the crucial points of the numeric implementation. We find that soft resummation keeps the hadronic cross section close to the fixed next-to-leading-order result.

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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