论文标题
重型夸克的中等强化及其对重离子碰撞中魅力的梅森和巴里昂分布的影响
In-medium hadronization of heavy quarks and its effect on charmed meson and baryon distributions in heavy-ion collisions
论文作者
论文摘要
我们提出了一个新模型，以描述在存在较轻的热颗粒储层的情况下，在相对论重的重离子碰撞中描述了重组，从而导致形成色彩单词簇的形成。假定颜色中和在当地发生，在重夸克所占据的同一流体电池中，它通过后者重组与轻质的反夸克（夸克）或diquarks（夸克）或diquarks（反式Quarks）进行进行，假定它们是在培养基中以QCD交叉温度的有效自由度围绕自由的培养基中的。通常，在大多数情况下，所得的颜色单簇的质量很低，在大多数情况下，在这种情况下，假定它们会在其局部休息框架中经历各向同性的2型衰变。较重的集群被碎片为隆德字符串。与最新测量的定性一致性，与光diquarks重组的可能性增强了迷人的重子的产量。局部颜色中和的假设导致了很强的空间摩孔相关性，从而大大增强了最终状态迷住的hadron的集体流动，影响了它们的动量和角度分布
We present a new model for the description of heavy-quark hadronization in relativistic heavy-ion collisions in the presence of a reservoir of lighter thermal particles with which recombination can occur leading to the formation of color-singlet clusters. Color neutralization is assumed to occur locally, within the same fluid cell occupied by the heavy quark and it proceeds via the recombination of the latter with light antiquarks (quarks) or diquarks (anti-diquarks), which are assumed to be present in the medium with thermal abundance as effective degrees of freedom around the QCD crossover temperature $T_c$. Typically the resulting color-singlet clusters have quite low invariant mass, in most of the cases below 4 GeV, and in this case they are assumed to undergo an isotropic 2-body decay in their local rest-frame. Heavier clusters are instead fragmented as Lund strings. The possibility of recombination with light diquarks enhances the yields of charmed baryons, in qualitative agreement with recent measurements. The assumption of local color neutralization leads to a strong space-momentum correlation, which provides a substantial enhancement of the collective flow of the final-state charmed hadrons, affecting both their momentum and their angular distributions
