论文标题
J/$ψ$在LHC上使用爱丽丝探测器的中高度的生产测量
J/$ψ$ production measurements at mid-rapidity using the ALICE detector at the LHC
论文作者
论文摘要
炭的产量对（超） - 层次主义重型离子碰撞（称为夸克 - 杜伦等离子体（QGP））产生的热培养基高度敏感。 J/$ψ$生产的测量是研究该媒介特性的重要工具。除了QGP效应外，J/$ψ$的产生还通过冷核物质（CNM）效应（例如阴影或Parton能量损失）来改变。这些作用是在预计不会形成QGP的质子核碰撞中研究的。为了量化介质如何修饰J/$ψ$的产生，真空产生以质子 - 蛋白质（PP）碰撞进行建模，并用作重型离子和质子核和质子核碰撞的参考。 PP碰撞中的测量还可以作为测试基于扰动和非扰动制度中基于量子染色体动力学（QCD）模型的重要工具。爱丽丝探测器具有独特的能力，即通过Di-Electron通道在中期频道下测量j/$ψ$，至零横向动量。在此贡献中，将讨论Alice合作在LHC Run 2期间进行的2个时期中最新的J/$ψ$测量值的选择。
Charmonium production is highly sensitive to the hot and dense medium created in (ultra)-relativistic heavy-ion collisions, known as the Quark-Gluon Plasma (QGP). Measurements of the J/$ψ$ production serve as important tools for studying the properties of this medium. In addition to QGP effects, the J/$ψ$ production is modified by the presence of cold nuclear matter (CNM) effects such as shadowing or parton energy loss. These effects are studied in proton-nucleus collisions where no QGP formation is expected. In order to quantify how the J/$ψ$ production is modified by the medium, the vacuum production is modelled in proton-proton (pp) collisions and used as a reference for heavy-ion and proton-nucleus collisions. Measurements in pp collisions also serve as important tools for testing Quantum Chromodynamic (QCD) based models in both perturbative and non-perturbative regimes. The ALICE detector has the unique capability of measuring the J/$ψ$ at mid-rapidity through the di-electron channel down to zero transverse momentum. In this contribution a selection of the newest J/$ψ$ measurements at mid-rapidity performed by the ALICE Collaboration during the LHC Run 2 period will be discussed.
