arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1907.06408hep-ph
收藏

NLO的双希格斯玻色子产生:结合精确数值结果和高能展开

Double Higgs boson production at NLO: combining the exact numerical result and high-energy expansion

Joshua Davies, Gudrun Heinrich, Stephen P. Jones, Matthias Kerner, Go Mishima, Matthias Steinhauser, David Wellmann

摘要:

利用我们最近计算的高能极限下的形状因子,我们考虑了对希格斯玻色子玻色子对产生的次领先阶QCD修正。我们计算虚修正的部分子截面,应用Padé近似扩展的有效范围内的高能量的扩展。这使我们能够在相空间的一个重要部分的精确数值计算进行比较,并允许我们扩展虚拟矩阵元网格,精确的数值计算的基础上,更大的值(部分)的横向动量的希格斯玻色子,这是很重要的助推希格斯研究。本文对质心能量为$14\ \mathrm{TeV}$和$100\ \mathrm{TeV}$的强子对撞机给出了改进的预言。更新后的网格公开提供。

英文摘要:

We consider the next-to-leading order QCD corrections to Higgs boson pair production, using our recent calculation of the form factors in the high-energy limit. We compute the virtual corrections to the partonic cross section, applying Padé approximations to extend the range of validity of the high-energy expansion. This enables us to compare to the exact numerical calculation in a significant part of the phase space and allows us to extend the virtual matrix element grid, based on the exact numerical calculation, to larger values of the (partonic) transverse momentum of the Higgs boson, which is important for boosted Higgs studies. Improved predictions for hadron colliders with centre-of-mass energies of $14\ \mathrm{TeV}$ and $100\ \mathrm{TeV}$ are presented. The updated grid is made publicly available.

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。

↑