矢量玻色子聚变产生希格斯玻色子的一圈QCD振幅到$ε$的高阶
One-loop QCD amplitudes for vector-boson-fusion Higgs-boson production to higher orders in $ε$
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中文总结 AI 辅助
本文计算了强子对撞机矢量玻色子聚变产生希格斯玻色子的一圈QCD振幅到维度正则化参数的高阶,为未来精确NNLO计算提供输入,并比较了不同计算方案。
中文摘要 AI 辅助
我们考虑在强子对撞机上通过矢量玻色子聚变产生希格斯玻色子的一圈QCD修正。作为未来精确NNLO计算的输入,我们导出了维度正则化参数到高阶的一圈螺旋度振幅。我们使用旋量螺旋度技术和不同的$\gamma_5$方案直接计算了这些振幅。此外,我们将这种方法与基于投影算子的计算进行了比较。为了得到$\epsilon$高阶的解析结果,我们通过$\epsilon$因子化微分方程的方法计算了五边形主积分,并将其表示为代数独立的一组基函数。
英文摘要
We consider one-loop QCD corrections to Higgs-boson production via vector-boson fusion at hadron colliders. As an input for future exact NNLO computations, we derive the one-loop helicity amplitudes to higher orders in the dimensional regulator. We present a direct calculation of the amplitudes with spinor-helicity techniques and different $γ_5$ schemes. In addition, we compare this approach to a projector-based calculation. In order to derive analytical results to higher orders in $ε$, we calculate the pentagon master integrals by the method of $ε$-factorised differential equations and express them in terms of an algebraically independent set of basis functions.
发表机构
- Institute for Theoretical Physics, University of Regensburg(雷根斯堡大学理论物理研究所)
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