论文标题
爱丽丝的Quarkonium生产概述
Overview of quarkonium production in ALICE
论文作者
论文摘要
爱丽丝（Alice）是一项实验，主要致力于研究夸克 - 糖浆血浆（QGP），这是由于高温和密度，夸克和胶子被解剖的核问题状态。 Quarkonia的生产是一种魅力和抗Charm Quark对的绑定状态，或者是底部的底部和抗底夸克对，是对这种状态的非常有用的探测。实际上，由于中等诱导的抑制作用，至少对于夏娃（Charmonia），QGP的存在会改变其产量，这是在培养基中或在强环化时的重组机制。质子 - 蛋白质（PP）碰撞中Quarkonium生产的测量对于研究其生产机制以及测试量子染色体动力学（QCD）模型也至关重要。它还提供了研究QGP在核碰撞核中的特性的参考。质子的测量 - 核肠相碰撞可以研究冷核物质效应。此外，高多样性PP碰撞对于研究倍度相互作用并在小型系统中寻找集体性很有用。在这项贡献中，我们将报告最新的Quarkonium生产结果，该结果是在PP碰撞中使用的Alice探测器获得的，以在中心中心和前进性速度下进行不同的质量中心能量。我们还将介绍$ \ sqrt {s_ {nn}} = 8.16 $ 〜tev的p-pb碰撞中Quarkonium核修饰因子的测量值。最后，在$ \ sqrt {s_ {nn}} = 5.02 $ 〜tev的pb-pb碰撞中，我们将报告新的$ψ（2S）$测量，即及时和非Prompt j/$ψ$的核修饰因子的核修饰因子，以及第一个Quarkonium Pallized of Flacherplation flaper carried carried car riqured car niquiend car niquiend car niquion a n affind a n affiquiq a n afiquiqu n affiquig a n facif。将将所有测量值与理论预测进行比较。
ALICE is an experiment mainly dedicated to the study of the quark-gluon plasma (QGP), a state of nuclear matter where quarks and gluons are deconfined, due to high temperature and density. The production of quarkonia, bound states of either a charm and anti-charm quark pair for charmonia or a bottom and anti-bottom quark pair for bottomonia, is a very useful probe of this state of matter. Indeed, the presence of the QGP modifies their production yields, due to a competition between medium-induced suppression and, at least for charmonia, a recombination mechanism in medium or at hadronization. The measurement of quarkonium production in proton-proton (pp) collisions is also essential to investigate its production mechanism as well as to test quantum chromodynamics (QCD) models. It also provides a reference for the investigation of the properties of the QGP in nucleus--nucleus collisions. Measurements in proton--nucleus collisions allow one to study the cold nuclear matter effects. In addition, high multiplicity pp collisions are useful to investigate multiparton interactions and to search for collectivity in small systems. In this contribution, we will report on the latest quarkonium production results, obtained with the ALICE detector in pp collisions, for different center-of-mass energies, at midrapidity and forward rapidity. We will also present the measurements of the quarkonium nuclear modification factor in p--Pb collisions at $\sqrt{s_{NN}}=8.16$~TeV. Finally, in Pb--Pb collisions at $\sqrt{s_{NN}}=5.02$~TeV, we will report on the new $ψ(2S)$ measurement, the nuclear modification factor of the prompt and non-prompt J/$ψ$, as well as the first measurement of quarkonium polarization, the latter carried out also as a function of the event plane. All the measurements will be compared to theoretical predictions.
