A Monte Carlo event generator for high energy hadron-hadron collisions - ECCO 2.0

Abstract
ECCO is a Monte Carlo event generator for soft multiparticle production in high energy hadron-hadron collisions. It describes the geometrical aspects of a hadron with eikonal formalism and implements the dynamical aspects with self-similar branching of clusters. Following a brief review of the physics underlying ECCO, a detailed description of the program is presented. A sample main program and the output are given at the end.

Title of program: ECCO 2.0
Catalogue Id: ACPM_v1_0

Nature of problem
A hadron is a complicated, extended object. The majority of high energy hadron-hadron collision events contains a large number of final state hadrons. Because of the low transverse momenta of the produced hadrons, such process can not be understood in terms of the quantum chromo- dynamics (QCD) by using perturbative calculations.

Versions of this program held in the CPC repository in Mendeley Data
ACPM_v1_0; ECCO 2.0; 10.1016/0010-4655(93)90154-5

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

摘要
ECCO是一款用于高能强子-强子碰撞中软多粒子产生过程的蒙特卡洛事件生成器。它采用程函（eikonal）形式体系描述强子的几何特性，并通过簇团自相似分支实现动力学特性的建模。本文在简要回顾ECCO背后的物理原理后，对该程序进行了详细说明，文末附带了示例主程序与输出样例。

程序名称：ECCO 2.0
目录编号：ACPM_v1_0

问题本质
强子是一种复杂的延展型粒子。绝大多数高能强子-强子碰撞事件会产生大量末态强子。由于所产生强子的横向动量较低，此类过程无法通过微扰计算借助量子色动力学（QCD）进行理论阐释。

Mendeley数据的CPC程序库中收录的本程序版本为：ACPM_v1_0; ECCO 2.0; 10.1016/0010-4655(93)90154-5

本程序源自贝尔法斯特女王大学托管的CPC程序库（1969-2019年）