High-energy-physics event generation with Pythia 6.1

Abstract Pythia version 6 represents a merger of the Pythia 5, Jetset 7 and SPythia programs, with many improvements. It can be used to generate high-energy-physics ‘events’, i.e. sets of outgoing particles produced in the interactions between two incoming particles. The objective is to provide as accurate as possible a representation of event properties in a wide range of reactions. The underlying physics is not understood well enough to give an exact description; the programs therefore contain a com... Title of program: PYTHIA V6.154 Catalogue Id: ACTU_v2_0 [ADNN] 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 intractable 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 6版本是整合了Pythia 5、Jetset 7以及SPythia三款程序并加以诸多改进后的产物。本程序可用于生成高能物理“事件”，即由两个入射粒子相互作用所产生的出射粒子集合。其目标是尽可能精准地刻画各类反应中的事件特性。但目前对其基础物理的理解尚不足以给出精确描述；因此本程序包含了一个com……

程序名称：PYTHIA V6.154
目录编号：ACTU_v2_0 [ADNN]
问题性质：基本粒子（elementary particles）间的高能碰撞通常会产生复杂的末态（final states），伴随大量的强子（hadrons）、轻子（leptons）、中微子（neutrinos）与光子（photons）。这些末态与基础物理描述之间的关联并非简单直接，主要有两点原因：其一，即便在理论层面，我们也尚未完全掌握该物理过程；其二，庞大的粒子多重度使得任何解析方法（analytical approach）都变得难以处理。

存放在Mendeley数据集内的CPC程序库中的该程序版本如下：
ACTU_v1_0; PYTHIA 5.7 与 JETSET 7.4; DOI: 10.1016/0010-4655(94)90132-5
ACTU_v2_0; PYTHIA V6.154; DOI: 10.1016/S0010-4655(00)00236-8
ACTU_v2_1; PYTHIA 版本号：6.420; DOI: 10.1016/j.cpc.2009.08.008
ACTU_v3_0; Pythia 8.1; DOI: 10.1016/j.cpc.2008.01.036
ACTU_v4_0; Pythia 8.2; DOI: 10.1016/j.cpc.2015.01.024

本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2018）。