论文标题
与爱丽丝的核核碰撞中的Quarkonium测量值
Quarkonium measurements in nucleus-nucleus collisions with ALICE
论文作者
论文摘要
沉重的夸克是在核核碰撞的早期阶段产生的，因此可以提供对夸克 - 糖浆血浆（QGP）的重要见解。提出Quarkonia作为研究QGP的关键探针。重型离子碰撞中的重夸克夸克产量的培养基修饰的范围是根据核修饰因子$ r _ {\ rm aa} $来衡量的，该因子定义为由核重叠功能扩展的Quarkonium cross collisions中的Quarkonium Cross cross的重型离子碰撞中的Quarkonium产量。可能相对于反应平面而言，可能导致Quarkonium产生的方位角各向异性，可能会导致Quarkonia的（重新生成Quarkonia）的（重新生成Quarkonia）的贡献。在这一贡献中，将在$ \ sqrt {s _ {\ rm nn}} $ = 5.02 TEV的情况下，以中速和前进的速度讨论了PB-PB碰撞中Quarkonium的最新测量值。 $ r _ {\ rm aa} $的依赖性在j/$ψ$，$υ$（$υ$（1S），$υ$（2s）的$ p _ {\ rm t} $上，以及J/$ψ$ eLLIPTIC FLOOD $ v_ {2} $将显示。还将讨论实验数据和当前的理论模型计算。
Heavy quarks are produced in the early stages of nucleus-nucleus collisions and can therefore provide important insight into the Quark-Gluon Plasma (QGP). Quarkonia are proposed as crucial probes to study the QGP. The extent of the medium modification for heavy-quark quarkonium production in heavy-ion collisions is measured in terms of a nuclear modification factor $R_{\rm AA}$, defined as the quarkonium yield in heavy-ion collisions divided by the relative quarkonium cross section in pp collisions scaled by the nuclear overlap function. A possible path-length dependent quarkonium dissociation, as well as a contribution of (re-)generation of quarkonia from heavy quarks in the medium, would lead to an azimuthal anisotropy of quarkonium production relative to the reaction plane. In this contribution, the recent ALICE measurements of quarkonium in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV will be discussed for both mid- and forward rapidity. The dependence of $R_{\rm AA}$ on centrality and $p_{\rm T}$ for J/$ψ$, $Υ$(1S), $Υ$(2S), as well as the J/$ψ$ elliptic flow $v_{2}$ will be shown. The experimental data and the current theoretical model calculations will be also discussed.
