BBBREM — Monte Carlo simulation of radiative Bhabha scattering in the very forward direction

Abstract
A fast and simple Monte Carlo program is presented that simulates single Bremsstrahlung in Bhabha scattering, e^+ e^-→ e^+ e^- γ, without constraints on scattering angles. This allows the study of this process at arbitrarily small, or even vanishing, scattering angles. Experimental cuts can be imposed on an event-by-event basis, allowing for detailed studies of the process as a limitation to beam lifetimes, or a luminosity-measuring device, in e^+ e^-storage rings. As an application, we s...

Title of program: BBBREM
Catalogue Id: ACTW_v1_0

Nature of problem
Radiative Bhabha scattering, e+e- -> e+e-gamma, has a very large cross section at small scattering angles, and plays various roles in existing and future e+e- colliders. It can be an important background to several two-photon scattering processes; it forms the major ingredient in the finite lifetime of colliding beams; and it is a possible process by which the luminosity can be measured, by observing electrons or photons emerging at zero scattering angle. Accurate knowledge of its cross section ...

Versions of this program held in the CPC repository in Mendeley Data
ACTW_v1_0; BBBREM; 10.1016/0010-4655(94)90085-X

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

摘要
本文提出一款快速简洁的蒙特卡洛程序（Monte Carlo program），用于模拟巴哈散射（Bhabha scattering）$e^+e^- o e^+e^-gamma$中的单次韧致辐射（Bremsstrahlung）过程，且不施加散射角约束。该设计可实现该过程在任意小乃至趋近于零的散射角下的研究。可基于逐事件（event-by-event）原则施加实验截断条件，从而能够针对正负电子对储存环（storage ring）中该过程对束流寿命的限制效应，或其作为亮度测量装置的应用场景开展细致研究。作为应用案例，我们将……

程序名称：BBBREM
目录编号：ACTW_v1_0

问题本质
辐射型巴哈散射（$e^+e^- o e^+e^-gamma$）在小散射角下具有极高的散射截面（cross section），在现有及未来的正负电子对撞机（collider）中发挥多重作用。它可作为多种双光子散射过程的重要本底；是决定对撞束流有限寿命的核心因素；同时也可通过观测零散射角出射的电子或光子，作为测量对撞机亮度（luminosity）的可行过程。对其散射截面的精准认知……

Mendeley数据库中CPC（Computer Physics Communications）程序库收录的本程序版本：ACTW_v1_0；BBBREM；10.1016/0010-4655(94)90085-X

本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2019年）