对大型强子对撞机生产toponium的最新预测

IF 4.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics Letters B Pub Date : 2025-05-12 DOI:10.1016/j.physletb.2025.139532

M.V. Garzelli , G. Limatola , S.-O. Moch , M. Steinhauser , O. Zenaiev

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引用次数: 0

摘要

我们提供了一个更新的QCD预测顶夸克对产生接近阈值，包括在大型强子对撞机的束缚态效应。我们计算了顶夸克对不变质量分布dσ/dMtt¯，包括束缚态效应的库仑恢复，以及软胶子和共线胶子发射的阈值恢复。我们讨论了不确定性估计，并提出了在实验分析中使用这些预测的建议。

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Updated predictions for toponium production at the LHC

We provide an update on QCD predictions for top-quark pair production close to threshold including bound state effects at the Large Hadron Collider. We compute the top-quark pair invariant mass distribution

d σ / d M_{t \bar{t}}

, including Coulomb resummation for bound-state effects, as well as threshold resummation for emissions of soft and collinear gluons. We discuss uncertainty estimates and present a proposal for the use of these predictions in experimental analyses.

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来源期刊

Physics Letters B 物理-物理：综合

CiteScore

9.10

自引率

6.80%

发文量

647

审稿时长

3 months

期刊介绍： Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.