arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1906.02523hep-ph
收藏

前向区LHC能质子-质子碰撞的Monte Carlo事件发生器研究

Study of Monte Carlo event generators for proton-proton collisions at LHC energies in the forward region

Alexandru Catalin Ene, Alexandru Jipa, Lavinia-Elena Giubega

摘要:

在本文中,我们提出了一个比较研究PYTHIA,EPOS,QGSJET,和SIBYLL发生器。考虑的全局事件观测量是带电能流、带电粒子分布、带电强子产生比和$V^{0}$比。研究是在LHCb和TOTEM基准相空间的最小偏差模拟数据样本\emph{pp}碰撞在$\sqrt{s} = 7$ TeV使用参考测量上述实验。在大多数情况下,测量值都在最极端的预测所定义的范围内。观测到的预测值和测量值之间的差异似乎在很大程度上是由从中央赝快度区域($|η| \leq$ 2.5)的外推造成的,在该区域中,发生器主要是调谐的。

英文摘要:

In this paper we present a comparative study between PYTHIA, EPOS, QGSJET, and SIBYLL generators. The global event observables considered are the charged energy flow, charged-particle distributions, charged-hadron production ratios and $V^{0}$ ratios. The study is performed in the LHCb and TOTEM fiducial phase-spaces on minimum bias simulated data samples for \emph{pp} collisions at $\sqrt{s} = 7$ TeV using reference measurements from the aforementioned experiments. In the majority of cases, the measurements are within a band defined by the most extreme predictions. The observed differences between the predictions and the measurements seem to be, in most part, caused by extrapolation from the central pseudorapidity region ($|η| \leq$ 2.5), in which the generators were mainly tuned.

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。

↑