We propose to measure the energy correlator in quarkonium production, which tracks the energy deposited in the calorimeter at the 𝜒-angular distance away from the identified quarkonium. The observable eliminates the need for jets while sustaining the perturbative predictive power. Analyzing the power correction to the energy correlator, we demonstrate that the novel observable supplies a unique gateway to probing the hadronization, especially when cos⁡𝜒≳0 in the quarkonium rest frame, where the perturbative emissions are depleted due to the dead-cone effects. We expect the quarkonium energy correlator to add a new dimension to quarkonium studies.

中文翻译：

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通过 Quarkonium 能量相关器阐明强子化


我们建议测量夸科铀生产中的能量相关器，它跟踪量热仪中沉积在距离已识别的夸科铓 χ 角距离处的能量。Observable 消除了对喷流的需求，同时保持了扰动预测能力。通过分析能量相关器的功率校正，我们证明了这种新颖的可观测物为探测强子化提供了一个独特的途径，特别是当石英静止坐标系中的 cosχ≳0 时，由于死锥效应，扰动发射耗尽。我们预计 quarkonium 能量相关器将为 quarkonium 研究增加一个新的维度。