XQCAT: eXtra Quark Combined Analysis Tool

Abstract XQCAT (eXtra Quark Combined Analysis Tool) is a tool aimed at determining exclusion confidence levels for scenarios of new physics characterised by the presence of one or multiple heavy extra quarks which interact through Yukawa couplings with any of the Standard Model quarks. The code uses a database of efficiencies for pre-simulated processes of QCD-induced pair production of extra quarks and their subsequent on-shell decays. In the version 1.2 of XQCAT the efficiencies have been computed f... Title of program: XQCAT Catalogue Id: AEXS_v1_0 Nature of problem Experimental searches of new heavy extra quarks (XQs) usually consider minimal extensions of the Standard Model (SM) with only one XQ representation which couples only to the third generation SM quarks or only to the SM light quark families. In contrast, various theoretically-motivated scenarios of new physics predict a new quark sector, i.e. more than one new quark, with general couplings to SM quarks. Notable examples are composite Higgs models or universal extra-dimensions. Hence, recasting e ... Versions of this program held in the CPC repository in Mendeley Data AEXS_v1_0; XQCAT; 10.1016/j.cpc.2015.08.016 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)摘要 XQCAT（eXtra Quark Combined Analysis Tool）是一款旨在针对存在一个或多个通过汤川耦合（Yukawa couplings）与任意标准模型（Standard Model）夸克相互作用的超重夸克的新物理场景，确定其排除置信水平的工具。该代码利用了由量子色动力学（Quantum Chromodynamics，QCD）诱导的超重夸克成对产生及其后续壳上衰变的预模拟过程的效率数据库。在XQCAT的1.2版本中，效率已被计算为…… 程序名称：XQCAT 目录编号：AEXS_v1_0 问题本质 实验上对新型超重夸克（extra quarks，XQs）的搜寻通常仅考虑标准模型的最小扩展场景，即仅存在一种超重夸克表示，且该夸克仅与第三代标准模型夸克耦合，或仅与标准模型轻夸克家族耦合。与之不同的是，诸多具备理论动机的新物理场景预言存在新的夸克扇区——即不止一种新夸克，且其与标准模型夸克具有普适耦合性。典型示例包括复合希格斯模型或通用额外维度模型。因此，对…… Mendeley数据中的《Computer Physics Communications》（简称CPC）程序库收录的该程序版本：AEXS_v1_0；XQCAT；DOI:10.1016/j.cpc.2015.08.016 本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2018年）