精确顶夸克物理的新范式:用能量关联器称量顶夸克
A New Paradigm for Precision Top Physics: Weighing the Top with Energy Correlators
AI总结:
本文提出利用能量流三点关联器中角度约为 $m_t^2/p_T^2$ 的峰来测定顶夸克质量,开辟了一条少受软物理与潜在事件污染、且可由标准模型拉格朗日量直接计算的精确测量新途径。
摘要:
对撞机实验中的末态由能量流算子 $E(\vec n_i)$ 的关联函数 $\langle E(\vec n_1) \cdots E(\vec n_k) \rangle$ 表征。我们证明,顶夸克会在三点关联器中、于角度 $ζ\sim m_t^2/p_T^2$ 处留下一个峰,其中 $m_t$ 为顶夸克质量,$p_T$ 为其横动量;这使得人们能够通过最简单的场论可观测量之一来获取标准模型最重要的参数之一。我们的分析为精确测定顶夸克质量的新范式迈出了第一步:该范式首次对软物理和 underlying event(潜在事件/底层事件)污染高度不敏感,同时仍可直接由标准模型 Lagrangian(拉格朗日量)计算。
英文摘要:
Final states in collider experiments are characterized by correlation functions, $\langle E(\vec n_1) \cdots E(\vec n_k) \rangle$, of the energy flow operator $ E(\vec n_i)$. We show that the top quark imprints itself as a peak in the three-point correlator at an angle $ζ\sim m_t^2/p_T^2$, with $m_t$ the top quark mass and $p_T$ its transverse momentum, providing access to one of the most important parameters of the Standard Model in one of the simplest field theoretical observables. Our analysis provides the first step towards a new paradigm for a precise top mass determination that is, for the first time, highly insensitive to soft physics and underlying event contamination whilst remaining directly calculable from the Standard Model Lagrangian.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。