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arXiv 1104.0881hep-phhep-thnucl-th
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快度重整化群

The Rapidity Renormalization Group

Jui-yu Chiu, Ambar Jain, Duff Neill, Ira Z. Rothstein

摘要:

我们介绍了一个系统的方法,涉及大的扰动系列,不仅由于大的不变质量比,但大rapidities以及大的扰动。这种形式的级数可以出现在各种各样的规范理论观测量中。利用该形式主义以系统的方式计算射流加宽事件的形状,以接近领先的对数阶。给出了因子化截面的算子定义和次主导原木截面的封闭形式。结果与数据一致,误差在范围内。

英文摘要:

We introduce a systematic approach for the resummation of perturbative series which involve large logarithms not only due to large invariant mass ratios but large rapidities as well. Series of this form can appear in a variety of gauge theory observables. The formalism is utilized to calculate the jet broadening event shape in a systematic fashion to next to leading logarithmic order. An operator definition of the factorized cross section as well as a closed form of the next-to leading log cross section are presented. The result agrees with the data to within errors.

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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