论文标题
Pythia 8.3的物理和使用综合指南
A comprehensive guide to the physics and usage of PYTHIA 8.3
论文作者
论文摘要
本手册描述了Pythia 8.3事件生成器，这是一种不断发展的物理工具的最新版本，用于回答粒子物理中的基本问题。该程序通常用于生成高能物理碰撞“事件”，即与两个传入的高能粒子碰撞产生的颗粒集，但除此之外还有几种用途。指导哲学是尽可能准确地产生和再现实验获得的碰撞的特性。该程序包括标准模型内外的广泛反应，并扩展到重离子物理学。重点是强烈互动起着主要作用的现象。该手册既包含教学和实用组件。所有随附的物理模型都有足够的详细信息描述，以使用户能够获得使用的假设和近似值的粗略概述，从而可以对程序输出进行知情评估。许多最中心的算法都进行了足够的详细描述，即可以独立地重现该程序的主要结果，从而可以进一步开发现有模型或添加新模型。最后，将全部专用于用户的章节包含在最后，提供了标准用例的教学示例，以及许多外部接口的详细描述。可以在pythia网页上找到程序代码，在线手册和此版本的最新版本：https：//www.pythia.org/
This manual describes the PYTHIA 8.3 event generator, the most recent version of an evolving physics tool used to answer fundamental questions in particle physics. The program is most often used to generate high-energy-physics collision "events", i.e. sets of particles produced in association with the collision of two incoming high-energy particles, but has several uses beyond that. The guiding philosophy is to produce and reproduce properties of experimentally obtained collisions as accurately as possible. The program includes a wide ranges of reactions within and beyond the Standard Model, and extending to heavy ion physics. Emphasis is put on phenomena where strong interactions play a major role. The manual contains both pedagogical and practical components. All included physics models are described in enough detail to allow the user to obtain a cursory overview of used assumptions and approximations, enabling an informed evaluation of the program output. A number of the most central algorithms are described in enough detail that the main results of the program can be reproduced independently, allowing further development of existing models or the addition of new ones. Finally, a chapter dedicated fully to the user is included towards the end, providing pedagogical examples of standard use cases, and a detailed description of a number of external interfaces. The program code, the online manual, and the latest version of this print manual can be found on the PYTHIA web page: https://www.pythia.org/
