parton showers 对数精度的新标准

Melissa van Beekveld; Mrinal Dasgupta; Basem Kamal El-Menoufi; Silvia Ferrario Ravasio; Keith Hamilton; Jack Helliwell; Alexander Karlberg; Pier Francesco Monni; Gavin P. Salam; Ludovic Scyboz; Alba Soto-Ontoso; Gregory Soyez

parton showers 对数精度的新标准

高能物理 - 唯象学 2025-01-07 v2 高能物理 - 实验

作者: Melissa van Beekveld , Mrinal Dasgupta , Basem Kamal El-Menoufi , Silvia Ferrario Ravasio , Keith Hamilton , Jack Helliwell , Alexander Karlberg , Pier Francesco Monni , Gavin P. Salam , Ludovic Scyboz , Alba Soto-Ontoso , Gregory Soyez

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摘要

我们报告了在构建对数精确的最终态 parton 浴方面的重大里程碑，实现了下一级次对数精度（NNLL）的宽类观测量。此次进展的关键在于识别了关键 NNLL 分析 resummation 成分与其 parton-shower 对等量之间的关系。我们的分析方法以数值测试为补充，对比评估了三个 shower 变体在 $Z \to q \bar q$ 和 Higgs $\to gg$ 衰变中超过十种不同观测量的对数精度。NNLL 项在现象学上具有显著大小，正如与数据比较所示。

关键词

parton 浴对数精度事件形状 NNLL resummation

引用

@article{arxiv.2406.02661,
  title  = {A new standard for the logarithmic accuracy of parton showers},
  author = {Melissa van Beekveld and Mrinal Dasgupta and Basem Kamal El-Menoufi and Silvia Ferrario Ravasio and Keith Hamilton and Jack Helliwell and Alexander Karlberg and Pier Francesco Monni and Gavin P. Salam and Ludovic Scyboz and Alba Soto-Ontoso and Gregory Soyez},
  journal= {arXiv preprint arXiv:2406.02661},
  year   = {2025}
}

备注

6 pages plus supplemental material; v2: matches the version published in Phys. Rev. Lett.; public code available as part of 0.2.0 release of PanScales, https://gitlab.com/panscales/panscales-0.X

parton showers 对数精度的新标准

摘要

关键词

引用

备注

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