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Updated: May 28, 2025

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Setting Limits on Supersymmetry Using Simplified Models
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在Gluon融合中对ZZ生产进行完整的下一个主要订单QCD纠正
Bakul Agarwal1,2, Stephen Jones3, Matthias Kerner1
1Karlsruhe Institute of Technology (KIT), Institute for Theoretical Physics, D-76131 Karlsruhe, Germany.
Physical review letters
|February 10, 2025
概括
我们计算了子诱导的ZZ生成的量子染色学校正,包括顶夸克质量效应. 这些校正对于大型强子对撞机的高能碰撞具有重要意义.
科学领域:
- 高能物理 高能物理
- 量子色态动力学 量子色态动力学
- 粒子物理学 粒子物理学
背景情况:
- 循环诱导的离子融合到ZZ生产是精度研究的关键过程.
- 顶夸克质量效应对于准确的理论预测至关重要.
研究的目的:
- 要计算循环诱导的gg→ZZ生产的完整的下一个领先顺序 (NLO) QCD校正.
- 为了研究全顶夸克质量对这个过程的影响.
主要方法:
- 将无质量和希格斯介导贡献的分析结果与包括顶夸克质量在内的数值计算幅度相结合.
- 分析不同减法方案对虚拟捐款的影响.
主要成果:
- 对于通过大规模的顶夸克循环直接生产而言,NLO 校正是相当大的.
- 大规模和希格斯介导的贡献在高二博松不变质量时增加,但破坏性干扰.
- 子通道的NLO纠正对N3LO的pp→ZZ+X截面有显著的贡献.
结论:
- 准确评估虚拟贡献对于准确的现象学预测至关重要.
- 顶夸克质量效应在高能量的gg→ZZ产生中起着关键作用.
- 这些NLO校正对于LHC未来的精度测量至关重要.
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