Energy-energy correlation in hadronic Higgs decays: analytic results and phenomenology at NLO

Energy-energy correlation in hadronic Higgs decays: analytic results and phenomenology at NLO
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强子希格斯衰变中的能量-能量相关性:NLO 的分析结果和现象学

DOI:
10.1007/jhep02(2021)210
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发表时间:
2020-12
期刊:
JHEP
影响因子:
--
通讯作者:
Yang Tong-Zhi
Yang Tong-Zhi
中科院分区:
其他
文献类型:
--
作者:
Gao Jun;Shtabovenko Vladyslav;Yang Tong-Zhi

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在这项工作中,我们完成了最近引入的能量-能量关联(EEC)功能的研究强子希格斯衰变在次领先的顺序(NLO)在固定阶微扰理论的极限消失轻夸克质量。在H→+ X通道中,给出了先前未知EEC的完整解析NLO结果,并与数值计算进行了交叉检验。此外,我们还讨论了对希格斯EEC事件形状变量预测的进一步修正,包括夸克质量修正、部分子簇射效应和强子化效应。我们还估计了在未来的希格斯工厂的希格斯EEC的测量的统计误差,并与当前的微扰不确定性进行比较。
In this work we complete the investigation of the recently introduced energy-energy correlation (EEC) function in hadronic Higgs decays at next-to-leading order (NLO) in fixed-order perturbation theory in the limit of vanishing light quark masses. The full analytic NLO result for the previously unknown EEC in the H→+ X channel is given in terms of classical polylogarithms and cross-checked against a numerical calculation. In addition to that, we discuss further corrections to predictions of the Higgs EEC event shape variable, including quark mass corrections, effects of parton shower and hadronization. We also estimate the statistical error on the measurements of the Higgs EEC at future Higgs factories and compare with the current perturbative uncertainty.
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