Abstract

The verification scheme in the package “Professor2” for setting parameters of the most used physics generator PYTHIA8.2 for simulating the processes in high energy physics is described. The goal is to tune the PYTHIA8.2 parameter list for the fragmentation process below \(b\bar {b}\) the production threshold. As an initial parameter list, we use the Belle (predecessor of the Belle II experiment) default parameter settings for fragmentation. For the MC pseudo-data, we use the Belle II software package i.e. basf2, and generator script developed by the main author of this paper. To validate the whole procedure, we use momentum distribution of charged pions and kaons to tune two free parameters of the fragmentation model in PYTHIA8 i.e. LUND fragmentation model. We demonstrate that the Professor2 package is a handful to perform multi-parameter tunes simultaneously.

中文翻译：

---

“Professor2”软件包，用于在 e+e– Annihilation 中调整碎片过程的参数

摘要

描述了“Professor2”包中的验证方案，用于设置最常用的物理发生器 PYTHIA8.2 的参数，用于模拟高能物理过程。目标是为\(b\bar {b}\)下面的分片过程调优PYTHIA8.2参数列表生产门槛。作为初始参数列表，我们使用 Belle（Belle II 实验的前身）默认参数设置进行碎片化。对于MC伪数据，我们使用Belle II软件包即basf2，以及本文主要作者开发的生成器脚本。为了验证整个过程，我们使用带电介子和介子的动量分布来调整 PYTHIA8 中碎片模型的两个自由参数，即 LUND 碎片模型。我们证明，Professional2 软件包是少数可以同时执行多参数调谐的。