MAJOR 1.5 — A Monte Carlo generator for heavy Majorana neutrinos in ep collisions

Abstract
The Monte Carlo generator MAJOR 1.5 simulates the production and decay of heavy Majorana neutrinos via lepton mixing or exchange of 'light' right-handed W-bosons in deep inelastic scattering, i.e. e^± p → NX → e^± W^∓ X or v_e ZX. Physics and programming aspects are described in this manual.

Title of program: MAJOR version 1.5
Catalogue Id: ADEQ_v1_0

Nature of problem
Heavy Majorana neutrinos are predicted by extended versions of the standard model of electroweak interactions in particle physics. They can be produced in deep inelastic electron-proton scattering via lepton mixing or exchange of 'light' right-handed W-bosons (e+-p -> NX) and they decay into a lepton and a weak boson (N -> e+-W-+ or nu Z0).

Versions of this program held in the CPC repository in Mendeley Data
ADEQ_v1_0; MAJOR version 1.5; 10.1016/S0010-4655(96)00132-4

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

摘要
蒙特卡洛发生器（Monte Carlo generator）MAJOR 1.5可模拟在深度非弹性散射（deep inelastic scattering）中，通过轻子混合（lepton mixing）或轻质右手征W玻色子（right-handed W-bosons）交换过程，生成重马约拉纳中微子（Heavy Majorana neutrinos）并模拟其衰变，对应反应道为：$e^pm + p o NX o e^pm + W^mp + X$ 或 $
u_e + Z^0$。本手册详述了该程序的物理原理与编程实现细节。

程序名称：MAJOR 版本1.5
目录编号：ADEQ_v1_0

问题背景
粒子物理领域中，电弱相互作用标准模型的扩展版本预言了重马约拉纳中微子的存在。这类中微子可通过轻子混合或轻质右手征W玻色子交换，在电子-质子深度非弹性散射过程中产生（反应道：$e^pm + p o NX$），并可衰变为一个轻子与一个弱玻色子（反应道：$N o e^pm + W^mp$ 或 $
u_e + Z^0$）。

Mendeley数据集中的CPC程序库收录的本程序版本：ADEQ_v1_0；MAJOR 版本1.5；DOI: 10.1016/S0010-4655(96)00132-4

本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2019年）。