TOPAZ0 - a program for computing observables and for fitting cross sections and forward-backward asymmetries around the Z0 peak
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Abstract The program TOPAZ0, which is designed for computing and fitting cross sections and forward-backward asymmetries of e^+ e^-annihilation into fermion pairs and of Bhabha scattering around the Z^0peak, is described. The various observables are computed over both a completely inclusive experimental set-up and a realistic one, i.e. with cuts on acollinearity, energy or invariant mass and angular acceptance of the outgoing fermions. Pure weak corrections at the one-loop level are included and l... Title of program: TOPAZ0 Catalogue Id: ACNT_v1_0 Nature of problem An accurate theoretical description of e+e- annihilation processes and of Bhabha scattering at the Z0 resonance is necessary in order to compare theoretical cross sections and asymmetries with the experimental ones as measured by the LEP collaborations. In particular a realistic theoretical description, i.e. a description in which the effects of experimental cuts, such as maximum acollinearity, energy or invariant mass and angular acceptance of the outgoing fermions, are taken into account, allo ... Versions of this program held in the CPC repository in Mendeley Data ACNT_v1_0; TOPAZ0; 10.1016/0010-4655(93)90060-P ACNT_v2_0; TOPAZ0 2.0; 10.1016/0010-4655(95)00127-1 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)
摘要 本文介绍了程序TOPAZ0，其专为计算并拟合Z⁰峰附近正负电子（e⁺e⁻）湮灭为费米子对过程以及巴哈散射（Bhabha scattering）的截面与前后不对称性而设计。程序针对两类实验场景计算各类可观测量：完全无限制的实验装置，以及包含实验截断条件的真实实验装置。后者需对出射费米子的非共线性、能量或不变质量以及角接收度设置截断规则。程序包含单圈阶的纯弱修正，且[原文截断]。 程序名称：TOPAZ0 目录编号：ACNT_v1_0 问题背景 为将理论截面与不对称性与大型正负电子对撞机（Large Electron–Positron Collider, LEP）合作组测得的实验结果进行比对，需对Z⁰共振能区的正负电子湮灭过程与巴哈散射给出精确的理论描述。尤为关键的是，需构建纳入实验截断效应的真实理论描述——即考虑出射费米子的最大非共线性、能量或不变质量限制以及角接收度要求——从而[原文截断]。 曼德利数据（Mendeley Data）的CPC程序库收录的该程序版本 ACNT_v1_0; TOPAZ0; 10.1016/0010-4655(93)90060-P ACNT_v2_0; TOPAZ0 2.0; 10.1016/0010-4655(95)00127-1 本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2019）
