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arXiv 1209.4630hep-ph
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软共线有效理论中小q_T下的大量玻色子产生

Massive Boson Production at Small q_T in Soft-Collinear Effective Theory

Thomas Becher, Matthias Neubert, Daniel Wilhelm

摘要:

本文研究了小和极小横动量q_T下电弱规范玻色子和Higgs产生的微分截面。用软共线有效理论计算了大的代数方程。共线异常产生非微扰标度q *,它保护过程不受大的长距离强子贡献的影响。我们的预测与数据的横向动量分布在Z玻色子生产的Tevatron和LHC的数值比较。

英文摘要:

We study the differential cross sections for electroweak gauge-boson and Higgs production at small and very small transverse-momentum q_T. Large logarithms are resummed using soft-collinear effective theory. The collinear anomaly generates a non-perturbative scale q_*, which protects the processes from receiving large long-distance hadronic contributions. A numerical comparison of our predictions with data on the transverse-momentum distribution in Z-boson production at the Tevatron and LHC is given.

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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