爱丽丝的味道很重

I. Artem
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引用次数: 0

摘要

重味夸克被认为是超相对论重离子碰撞中产生的夸克-胶子等离子体(QGP)的有效探测器。由于夸克有很大的质量,它们的产生大多发生在初始的硬过程中,并且可以用微扰QCD来计算。因此,重味夸克可以被认为是所创造介质的理想的早期产生的穿透探针,并用于研究介质中部分能量损失的质量依赖特性。此外,pp中重味射流产生的测量,除了作为Pb-Pb研究的自然参考外,还允许测试pQCD计算和真空中魅力破碎模型。此外,在p-Pb碰撞中的类似测量可以评估冷核物质效应的重要性。大型强子对撞机(LHC)上的ALICE实验具有出色的粒子跟踪能力,可以进行精确的喷流重建,并可以识别介子和美强子衰变顶点,它们从主要相互作用顶点位移了数百微米。在这篇论文中,我们将报道在p-Pb和pp碰撞中进行的最新重味射流测量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Heavy flavor jets in ALICE
Heavy-flavor quarks are considered to be effective probes of the Quark–Gluon Plasma (QGP) produced in ultra-relativistic heavy-ion collisions. Since quarks have a large mass, their production takes place mostly in initial hard processes, and it is calculable using perturbative QCD. Thus, heavy flavor quarks can be considered as ideal early-generated penetrating probes of the created medium and utilized to investigate mass-dependent properties of in-medium parton energy loss. Moreover, the measurement of heavy-flavor jet production in pp, besides being a natural reference for Pb–Pb studies, allows testing pQCD calculations and models of charm fragmentation in vacuum. In addition, similar measurements in p–Pb collisions allow assessing the importance of cold nuclear matter effects. The ALICE experiment at the LHC has excellent particle tracking capabilities, that allow for a precise jet reconstruction and for the identification of [Formula: see text]-meson and beauty hadron decay vertices, displaced hundreds of micrometers from the primary interaction vertex. In this proceedings, we will report the latest heavy-flavor jet measurements performed in p–Pb and pp collisions.
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