SCOT, a Monte Carlo generator to study the Lorentz structure of e+e−→Z→τ+τ−

Abstract Together with the vector and axial vector couplings, the general Lorentz structure of leptonic Z decays, (e^+ e^- →Z→τ^+ τ^- ), allows various additional types of interaction. In the present study a Monte Carlo generator, SCOT, is developed which simulates the general Lorentz structure of Z boson production and decay, and ultimately the τ decay. The program uses spin amplitudes to take the τ polarisation and the spin correlation into account and may be used for simulations at LEP and SLC. Title of program: SCOT VERSION 1.0 Catalogue Id: ACTJ_v1_0 Nature of problem Beyond the standard model Z boson production and decay allows a large number of additional coupling constants like weak magnetic and weak dipole moments. These can be studied by measuring the final spin density of e+e- -> Z(gamma) -> tau+tau-. Versions of this program held in the CPC repository in Mendeley Data ACTJ_v1_0; SCOT VERSION 1.0; 10.1016/0010-4655(94)90121-X This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)摘要 结合矢量耦合与轴矢耦合，轻子型Z玻色子衰变（e⁺e⁻→Z→τ⁺τ⁻）的一般洛伦兹结构允许存在多种额外相互作用类型。本研究开发了一款名为SCOT的蒙特卡洛发生器，用于模拟Z玻色子产生与衰变乃至τ轻子衰变的一般洛伦兹结构。该程序借助自旋振幅考虑τ轻子极化与自旋关联效应，可应用于大型电子正电子对撞机（Large Electron–Positron Collider，LEP）与斯坦福线性对撞机（Stanford Linear Collider，SLC）的模拟实验。 程序名称：SCOT 版本1.0 目录编号：ACTJ_v1_0 问题本质 超出标准模型的Z玻色子产生与衰变过程存在大量额外耦合常数，例如弱磁矩与弱偶极矩。可通过测量e⁺e⁻→Z(γ)→τ⁺τ⁻的末态自旋密度来研究这些耦合常数。 门德列耶数据（Mendeley Data）中计算机物理通讯（Computer Physics Communications，CPC）库内的该程序版本：ACTJ_v1_0；SCOT VERSION 1.0；10.1016/0010-4655(94)90121-X 本程序源自贝尔法斯特女王大学所维护的计算机物理通讯程序库（1969-2019年）