An event generator for interactions between hadrons and nuclei — FRITIOF version 7.0

Abstract
FRITIOF is a Monte Carlo program that implements the Lund string dynamics model for hadron-hadron, hadron-nucleus and nucleus-nucleus collisions. This new version extends from the original low-P_Tconstructions to include hard scattering effects and a more refined treatment of the QCD gluon radiation in terms of a soft radiation model in the colour dipole approximation. This paper includes a brief presentation of the model and a description of the program.

Title of program: FRITIOF version 7.0
Catalogue Id: ACHY_v1_0

Nature of problem
In high energy hadron-hadron, hadron-nucleus and nucleus-nucleus collisions multi particle final states are produced. The bulk of the particles produced are at low PT. Strong interaction processes are generally non-perturbative and can not yet be fully understood in terms of quantum chromodynamics (QCD). As energy gets higher, some high-PT phenomena begin to appear in accordance with the perturbative calculations in QCD. The problem is to consistently connect the high PT Rutherford scattering an ...

Versions of this program held in the CPC repository in Mendeley Data
ACHY_v1_0; FRITIOF version 7.0; 10.1016/0010-4655(92)90082-A

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

**摘要**
FRITIOF是一款蒙特卡洛（Monte Carlo）程序，用于实现强子-强子、强子-原子核及原子核-原子核碰撞的伦德弦动力学模型（Lund string dynamics model）。该新版本在原始低横向动量（P_T）框架基础上进行拓展，纳入硬散射效应，并采用色偶极近似下的软辐射模型，对量子色动力学（QCD）胶子辐射开展更精细化的处理。本文对该模型进行简要介绍，并对程序予以说明。

**程序名称**：FRITIOF 7.0版
**目录编号**：ACHY_v1_0

**待解决问题**
高能强子-强子、强子-原子核及原子核-原子核碰撞会产生多粒子末态，所生成的粒子绝大多数处于低P_T区间。强相互作用过程通常具有非微扰特性，目前尚无法完全通过量子色动力学（QCD）进行完整阐释。随着碰撞能量提升，部分高P_T现象开始出现，其规律与QCD微扰计算结果相符。本程序旨在实现高P_T卢瑟福散射与……（原文此处未完成）的自洽连接。

**Mendeley数据平台CPC程序库收录的该程序版本**：ACHY_v1_0；FRITIOF 7.0版；DOI:10.1016/0010-4655(92)90082-A

本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2019年）。