High-energy-physics event generation with PYTHIA 5.7 and JETSET 7.4

Abstract
Pythia and JETSET are the two main components of the “Lund Monte Carlo” program suite. They can be used to generate high-energy-physics “events”, i.e. sets of outgoing particles produced in the interactions between two incoming particles. Ideally these events should have the same average behaviour and the same fluctuations as real data. The underlying physics is not understood well enough to give an exact description; the programs therefore contain a combination of analytical results and vari...

Title of program: PYTHIA 5.7 AND JETSET 7.4
Catalogue Id: ACTU_v1_0

Nature of problem
High-energy collisions between elementary particles normally give rise to complex final states, with large multiplicities of hadrons, leptons, neutrinos and photons. The relation between these final states and the underlying physics description is not a simple one, for two main reasons. Firstly, we do not even in principle have a complete understanding of the physics. Secondly, any analytical approach is made untractable by the large multiplicities.

Versions of this program held in the CPC repository in Mendeley Data
ACTU_v1_0; PYTHIA 5.7 AND JETSET 7.4; 10.1016/0010-4655(94)90132-5
ACTU_v2_0; PYTHIA V6.154; 10.1016/S0010-4655(00)00236-8
ACTU_v2_1; PYTHIA Version number: 6.420; 10.1016/j.cpc.2009.08.008
ACTU_v3_0; Pythia 8.1; 10.1016/j.cpc.2008.01.036
ACTU_v4_0; Pythia 8.2; 10.1016/j.cpc.2015.01.024

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

摘要
Pythia与JETSET是隆德蒙特卡洛（Lund Monte Carlo）程序套件的两大核心组件，可用于生成高能物理“事件”——即两入射粒子相互作用所产生的出射粒子集合。理想状态下，此类事件应与真实实验数据具备一致的平均行为与涨落特性。由于当前对底层物理机制的认知尚未完善，无法给出精确描述，因此本程序整合了解析研究成果与可变（原文截断）……

程序名称：PYTHIA 5.7与JETSET 7.4
目录编号：ACTU_v1_0

问题背景
高能基本粒子碰撞通常会产生复杂的末态产物，包含大量强子、轻子、中微子与光子。这类末态产物与底层物理描述之间的关联并不简单，主要源于两点原因：其一，即便在理论层面，人类也尚未完全掌握相关物理机制；其二，极高的产物多重度使得任何解析方法都难以处理。

Mendeley数据中的CPC（Computer Physics Communications）程序库收录的本程序版本：
ACTU_v1_0；PYTHIA 5.7与JETSET 7.4；10.1016/0010-4655(94)90132-5
ACTU_v2_0；PYTHIA V6.154；10.1016/S0010-4655(00)00236-8
ACTU_v2_1；PYTHIA 版本号：6.420；10.1016/j.cpc.2009.08.008
ACTU_v3_0；Pythia 8.1；10.1016/j.cpc.2008.01.036
ACTU_v4_0；Pythia 8.2；10.1016/j.cpc.2015.01.024

本程序源自贝尔法斯特女王大学托管的CPC程序库（1969-2018）