EXCALIBUR — a Monte Carlo program to evaluate all four-fermion processes at LEP 200 and beyond

Abstract
A Monte Carlo program is presented that computes all four-fermion processes in e
^+
e
^-
annihilation. QED initial state corrections and QCD contributions are included. Fermions are taken to be massless, allowing a very fast evaluation of the matrix element. A systematic, modular and self-optimizing strategy has been adopted for the Monte Carlo integration, which serves also as a...

Title of program: EXCALIBUR
Catalogue Id: ADAJ_v1_0

Nature of problem
Heavy vector boson production will be investigated at e+e- colliders in a wide range of energies. At LEP II, the relevant process is <PRE> e+e- -> W+W- (1) At higher energies other processes like e+e- -> Z Z, (2) e+e- -> W e nu_e, (3) e+e- -> Z e+e-, (4) e+e- -> Z nu_e bar(nu)_e, (5)</PRE> become important. The detected experimental signal for all above processes is a four fermion final state. Therefore, a Monte Carlo program being able to take into account both signal and background electroweak ...

Versions of this program held in the CPC repository in Mendeley Data
ADAJ_v1_0; EXCALIBUR; 10.1016/0010-4655(94)00138-R

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

摘要：本文提出了一款蒙特卡洛程序，该程序可计算电子正负湮灭过程中所有四种费米子过程。程序考虑了量子电动力学初始态校正和量子色动力学贡献，并假设费米子质量为零，从而实现了矩阵元的高效计算。蒙特卡洛积分采用了系统化、模块化和自我优化的策略，这不仅提高了计算效率，也服务于...
程序名称：EXCALIBUR
目录编号：ADAJ_v1_0
问题性质：在电子正负对撞机上，将在广泛的能量范围内研究重矢量玻色子的产生。在LEP II阶段，相关过程为电子正负对撞产生W+W-玻色子（1）。在更高的能量下，其他过程如电子正负对撞产生Z Z玻色子（2）、电子正负对撞产生W玻色子与电子中微子（3）、电子正负对撞产生Z玻色子与电子正负对撞（4）、电子正负对撞产生Z玻色子与反电子中微子（5）等变得重要。上述所有过程的实验信号均为四费米子最终态。因此，一款能够同时考虑信号和背景电磁弱的蒙特卡洛程序对于研究这些过程至关重要。
Mendeley数据中CPC存储库中持有的此程序版本：ADAJ_v1_0; EXCALIBUR; 10.1016/0010-4655(94)00138-R
此程序已从贝尔法斯特女王大学（1969-2019年）的CPC程序库中导入。