标题： 在中等至大横动量下类子夸克偶素喷注关联的 collinear 碎裂函数 显示英文标题

标题： On the quarkonium-in-jet collinear fragmentation at moderate-to-large transverse momentum

摘要： 我们报告了重味非相对论演化（HF-NRevo）设置的进展，这是一种新颖的方法，用于在碎裂近似下研究类夸克偶素的形成。 我们的研究揭示了中等到大横动量区域的情况，在该区域内，单个粒子的领头 twist 碰撞碎裂占主导地位，高于由硬散射产生的组成重夸克对的高阶 twist 碰撞碎裂。 至于初始能量尺度的输入，我们依赖于所有部分子到类夸克偶素碎裂通道的非相对论下一阶计算。 通过演化的阈值增强 DGLAP 方案，构建了初步的可变味数方案（VFNS）碎裂函数集，命名为 NRFF1.0。 以 NRFF1.0 作为起点，我们利用 HF-NRevo 来研究喷注内部的类夸克偶素的碰撞碎裂。 显示英文摘要

摘要： We report progress on the Heavy-Flavor Non-Relativistic Evolution (HF-NRevo) setup, a novel methodology to address quarkonium formation within the fragmentation approximation. Our study sheds light on the moderate to large transverse-momentum sector, where the leading-twist collinear fragmentation of a single parton prevails over the higher-twist fragmentation from a constituent heavy-quark pair produced in the hard scattering. As for the initial energy-scale inputs, we rely on nonrelativistic next-to-leading calculations for all the parton-to-quarkonia fragmentation channels. Preliminary sets of variable-flavor number-scheme (VFNS) fragmentation functions, named NRFF1.0, are built via an evolution-threshold enhanced DGLAP scheme. Taking NRFF1.0 as a starting point, we use HF-NRevo to address the collinear fragmentation of quarkonia inside jets.