论文标题
XE+XE的粒子生产使用较高的扭曲方法与喷气淬火相撞
Particle production at large $p_T$ in Xe+Xe collisions with jet quenching using the higher twist approach
论文作者
论文摘要
$π^0 $，$η$和$ ϕ $在最中心（0％-5％）Xe+Xe碰撞时的产量在$ \ \ sqrt {s_ {nn}} $ = 5.44 TEV在均扰动QCD（PQCD）的框架中进行了调查，以改进的零件的框架（PQCD）的框架进行了改进的订单。射流淬灭效果通过中扭次扭曲的方法有效地通过中等修饰的碎片化函数纳入。 $π^0 $，$η$的核修饰因子和$ ϕ $作为横向动量$ p _ {\ rm t} $的函数的预测是用喷气运输参数$ \ hat {q} _0 $制成的，它是从Alice和Alice和CMS提供的带电的Hadron的可用实验数据中提取的。粒子比$η/π^0，\ ϕ/π^0 $作为$ p _ {\ rm t} $的函数，xe+xe碰撞在$ \ sqrt {s_ {s_ {s_ {nn}} $ = 5.44 tev，in 0％-5％pb+pb collisiati还提出了TEV。 XE+XE 5.44 TEV系统中电荷强体产生比率比PB+PB 5.02 5.02 TEV系统的缩放比率的数值模拟很好地描述了CMS数据，$π^0 $，$η$的比例比率为$π^0 $，$η$，$ ϕ $的产量与带电Hadron的Hadron生产相吻合。
The production of $π^0$, $η$, and $ϕ$ in the most central (0%-5%) Xe+Xe collisions at $\sqrt{s_{NN}}$ = 5.44 TeV is investigated in the framework of the perturbative QCD (pQCD) improved parton model at an accuracy of next-to-leading order (NLO). The jet quenching effect is effectively incorporated by medium-modified fragmentation functions via the higher-twist approach. Predictions of the nuclear modification factors of $π^0$, $η$, and $ϕ$ as functions of the transverse momentum $p_{\rm T}$ are made with the jet transport parameter $\hat{q}_0$, which is extracted from the available experimental data of charged hadrons provided by ALICE and CMS. The particle ratios $η/π^0,\ ϕ/π^0$ as functions of $p_{\rm T}$ in Xe+Xe collisions at $\sqrt{s_{NN}}$ = 5.44 TeV as well as in 0%-5% Pb+Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV are also presented. The numerical simulations of the scaled ratios of charged hadron production in the Xe+Xe 5.44 TeV system over those in the Pb+Pb 5.02 TeV system give a good description of the CMS data, and the scaled ratios of $π^0$, $η$, and $ϕ$ production coincide with the curve of charged hadron production.
