arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.00974hep-phhep-ex
收藏

介质中强子化的时空发展:领先强子的方案

Spacetime development of in-medium hadronization: Scenario for leading hadrons

B. Guiot, B. Z. Kopeliovich

摘要:

我们提出了一个真空和介质中强子化的微扰QCD模型。包括了感生能量损失和核吸收的影响。主要目的是确定这些机制的相对贡献的多重比观察,测量半包容性的深非弹性散射氘和核目标。这直接关系到夸克转变为前强子所必需的产生长度$Lp$的确定。我们比较我们的结果与HERMES数据的多重比和$p_t$ -加宽,并表明,整个数据集的描述,保持模型参数固定,提出了强约束$Lp$。相反,诱导能量损失为基础的模型,我们发现一个重要的贡献,在HERMES能量的核吸收。最后,我们讨论了我们的研究的LHC物理的一些后果,我们提出了未来EIC实验的模型预测。

英文摘要:

We present a perturbative QCD based model for vacuum and in-medium hadronization. The effects of induced energy loss and nuclear absorption have been included. The main objective is the determination of the relative contribution of these mechanisms to the multiplicity ratio observable, measured in semi-inclusive deep-inelastic scattering off deuterium and nuclear targets. This is directly related to the determination of the production length, $Lp$, necessary for a quark to turn into a prehadron. We compare our results with HERMES data for multiplicity ratio and $p_t$-broadening, and show that the description of the whole data set, keeping the model parameters fixed, puts strong constrains on $Lp$. Contrary to induced-energy-loss based models, we find an important contribution from nuclear absorption at HERMES energies. Finally, we discuss some consequences of our study for the LHC physics, and we present the model predictions for the future EIC experiment.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑