GR@PPA 2.7 event generator for p p / p p ¯ collisions

Abstract The GR@PPA event generator has been updated to version 2.7. This distribution provides event generators for V (W or Z)+jets (⩽4 jets), V V + jets (⩽2 jets) and QCD multi-jet (⩽4 jets) production processes at pp and p p ¯ collisions, in addition to the four bottom quark productions implemented in our previous work (GR@PPA_4b). Also included are the top-pair and top-pair+jet production processes, where the correlation between the decay products are fully reproduced at the tree level. N... Title of program: GR@PPA (v2.7) Catalogue Id: ADRH_v2_0 Nature of problem The multi-legs interaction processes have become more important with increasing the colliding energy available at the high energy collider experiments. At hadron-collider experiments, since thousands of Feynman diagrams contributes in the single ineraction process, the faster and more stable calculation to obtain the results is desirable. Versions of this program held in the CPC repository in Mendeley Data ADRH_v1_0; GR@PPA_4b (v1.0); 10.1016/S0010-4655(02)00793-2 ADRH_v2_0; GR@PPA (v2.7); 10.1016/j.cpc.2006.07.011 ADRH_v3_0; GR@PPA 2.8; 10.1016/j.cpc.2011.12.023 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)摘要 GR@PPA事件生成器已更新至2.7版本。本分发包除继承此前工作（GR@PPA_4b）中实现的4种底夸克产生过程外，还为质子-质子（pp）与质子-反质子（$ar{p}$）对撞环境下的V（W或Z）+喷注（≤4喷注）、VV+喷注（≤2喷注）以及量子色动力学（Quantum Chromodynamics，QCD）多喷注（≤4喷注）产生过程提供事件生成功能。此外，本包还涵盖顶夸克对及顶夸克对+喷注的产生过程，其衰变产物间的关联可在树级（tree level）水平下被完整复现。N... 程序名称：GR@PPA（v2.7） 目录编号：ADRH_v2_0 问题本质 随着高能对撞机实验可用碰撞能量的提升，多腿相互作用过程的重要性日益凸显。在强子对撞机实验中，单次相互作用过程往往涉及数千个费恩曼图（Feynman diagram），因此亟需更快速且稳定的计算方法以获取实验结果。 门德列耶数据（Mendeley Data）中CPC程序库存储的该程序版本如下： ADRH_v1_0；GR@PPA_4b（v1.0）；10.1016/S0010-4655(02)00793-2 ADRH_v2_0；GR@PPA（v2.7）；10.1016/j.cpc.2006.07.011 ADRH_v3_0；GR@PPA 2.8；10.1016/j.cpc.2011.12.023 本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2019）