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arXiv 1106.4652hep-ph
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强子对撞机上希格斯玻色子的产生:NNLO上的硬共线系数

Higgs boson production at hadron colliders: hard-collinear coefficients at the NNLO

S. Catani, M. Grazzini

摘要:

我们考虑强子碰撞中通过胶子熔合机制产生标准模型希格斯玻色子。我们给出了小横动量下,对全阶重算的磁增强贡献的硬共线系数函数的次-首阶(NNLO)QCD结果。系数函数以完全的次领先对数精度控制图解计算中的NNLO贡献。在减法的应用中使用相同的系数函数来执行高达NNLO的完全排他性微扰计算。

英文摘要:

We consider the production of the Standard Model Higgs boson through the gluon fusion mechanism in hadron collisions. We present the next-to-next-to-leading order (NNLO) QCD result of the hard-collinear coefficient function for the all-order resummation of logarithmically-enhanced contributions at small transverse momentum. The coefficient function controls NNLO contributions in resummed calculations at full next-to-next-to-leading logarithmic accuracy. The same coefficient function is used in applications of the subtraction method to perform fully-exclusive perturbative calculations up to NNLO.

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