论文标题
如何在LHC发现QCD Instantons
How to discover QCD Instantons at the LHC
论文作者
论文摘要
粒子物理学的标准模型预测了跨拓扑不相等的真空（称为Instantons）的量子隧穿过程的存在。在Electroweak扇区中，Instantons在标准模型中提供了Baryon不对称的来源。在量子染色体动力学中，它们与手性对称性的破坏和限制有关。因此，对激体诱导的过程的直接实验观察将是现代粒子物理学的突破。最近，质子质子碰撞中QCD插入过程的新计算变得公开，表明在LHC上有很大的横截面以及有希望的实验特征。在这项工作中，我们研究了可能的分析策略，以发现QCD Instanton在LHC处诱导的过程，并根据现有的最小偏差数据得出第一个限制。
The Standard Model of particle physics predicts the existence of quantum tunnelling processes across topological inequivalent vacua, known as Instantons. In the electroweak sector, instantons provide a source of baryon asymmetry within the Standard Model. In Quantum Chromodynamics they are linked to chiral symmetry breaking and confinement. The direct experimental observation of Instanton-induced processes would therefore be a breakthrough in modern particle physics. Recently, new calculations for QCD Instanton processes in proton-proton collisions became public, suggesting sizable cross sections as well as promising experimental signatures at the LHC. In this work, we study possible analysis strategies to discover QCD Instanton induced processes at the LHC and derive a first limit based on existing Minimum Bias data.
