Generating heavy particles with energy and momentum conservation

Abstract We propose a novel algorithm, called REGGAE, for the generation of momenta of a given sample of particle masses, evenly distributed in Lorentz-invariant phase space and obeying energy and momentum conservation. In comparison to other existing algorithms, REGGAE is designed for the use in multiparticle production in hadronic and nuclear collisions where many hadrons are produced and a large part of the available energy is stored in the form of their masses. The algorithm uses a loop simulating... Title of program: REGGAE (REscatterig-after-Genbod GenerAtor of Events) Catalogue Id: AEJR_v1_0 Nature of problem The task is to generate momenta of a sample of particles with given masses which obey energy and momentum conservation. Generated samples should be evenly distributed in the available Lorentz invariant phase space. Versions of this program held in the CPC repository in Mendeley Data AEJR_v1_0; REGGAE (REscatterig-after-Genbod GenerAtor of Events); 10.1016/j.cpc.2011.06.015 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

摘要 本文提出一种名为REGGAE的新型算法，用于生成给定质量样本粒子的动量，该样本在洛伦兹不变相空间（Lorentz-invariant phase space）中均匀分布且满足能量与动量守恒。相较于其他现有算法，REGGAE专为强子与核碰撞中的多粒子产生场景设计——此类场景会产生大量强子，且可用能量的绝大部分以粒子质量的形式存储。本算法通过循环模拟……

程序名称：REGGAE（REscatterig-after-Genbod事件生成器）
目录编号：AEJR_v1_0

问题本质 本任务旨在生成给定质量的粒子样本的动量，使其满足能量与动量守恒，且生成的样本需在可用洛伦兹不变相空间中均匀分布。

门德列耶数据（Mendeley Data）中的CPC程序库版本：AEJR_v1_0；REGGAE（REscatterig-after-Genbod事件生成器）；10.1016/j.cpc.2011.06.015

本程序源自贝尔法斯特女王大学维护的CPC程序库（1969-2018）