Simulation of Pile-up in the ATLAS Experiment

[摘要] The high luminosity of the LHC results in a significant background to interesting physics events known as pile-up. ATLAS has adopted two independent methods for modeling pile-up and its effect on analyses. The first is a bottom-up approach, using a detailed simulation of the detector to recreate each component of the pile-up background. The second uses specially recorded data events to emulate it. This article reports on the experience using both of these methods, including performance considerations, for simulating pile-up in ATLAS.

[发布机构] Lawrence Berkeley National Laboratory, University of California, Physics Division, 1 Cyclotron Road, Berkeley; CA; 94720, United States^1

[效力级别] 计算机科学 [学科分类] 计算机科学（综合）

[关键词] ATLAS experiment;Bottom up approach;Pile-ups