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arXiv 2102.07607hep-ph
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QCD中三阶全微分希格斯玻色子产生

Fully Differential Higgs Boson Production to Third Order in QCD

X. Chen, T. Gehrmann, E. W. N. Glover, A. Huss, B. Mistlberger, A. Pelloni

摘要:

本文在QCD微扰理论中提出了次-主导阶(N $^3$ LO)胶子融合机制下希格斯玻色子产生截面的全微分预言。为了进行我们的计算,我们应用投影玻恩方法的非因式分解生产的无色最终状态在大型强子对撞机在N $^3$ LO的计算。我们预测了由希格斯玻色子衰变产生的双光子末态的微分分布,并对光子的速度和动量应用了基准切割。对这些差分分布的N $^3$ LO校正具有复杂的特征,并且部分地大于对生产截面的包含性N $^3$ LO校正。总体而言,我们观察到,包括N $^3$ LO QCD校正显着降低微扰的不确定性,并导致稳定的微扰膨胀。

英文摘要:

We present fully differential predictions for the production cross section of a Higgs boson via the gluon fusion mechanism at next-to-next-to-next-to leading order (N$^3$LO) in QCD perturbation theory. To perform our calculation we apply the Projection-to-Born method for the first time to the calculation of the non-factorising production of a colorless final state at the LHC at N$^3$LO. We predict differential distributions for the two photon final state produced by the decay of the Higgs boson and apply fiducial cuts on the photon rapidities and momenta. The N$^3$LO corrections to these differential distributions have complex features and are in part larger than the inclusive N$^3$LO corrections to the production cross section. Overall, we observe that the inclusion of the N$^3$LO QCD corrections significantly reduces the perturbative uncertainties and leads to a stabilisation of the perturbative expansion.

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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