https://scholars.lib.ntu.edu.tw/handle/123456789/575150
標題: | Particle-flow reconstruction and global event description with the CMS detector | 作者: | PAO-TI CHANG YEE HSIUNG KAI-FENG CHEN RONG-SHYANG LU WEI-SHU HOU Stathes Paganis |
關鍵字: | Calorimeters; Charged particles; Hadrons; Particle detectors; Astroparticle physics; Centre-of-mass energies; Electromagnetic calorimeter; Hadron calorimeters; Muon identification; Particle Identification Method; Reconstruction algorithms; Strong magnetic fields; Fighter aircraft | 公開日期: | 2017 | 卷: | 12 | 期: | 10 | 來源出版物: | Journal of Instrumentation | 摘要: | The CMS apparatus was identified, a few years before the start of the LHC operation at CERN, to feature properties well suited to particle-flow (PF) reconstruction: a highly-segmented tracker, a fine-grained electromagnetic calorimeter, a hermetic hadron calorimeter, a strong magnetic field, and an excellent muon spectrometer. A fully-fledged PF reconstruction algorithm tuned to the CMS detector was therefore developed and has been consistently used in physics analyses for the first time at a hadron collider. For each collision, the comprehensive list of final-state particles identified and reconstructed by the algorithm provides a global event description that leads to unprecedented CMS performance for jet and hadronic τ decay reconstruction, missing transverse momentum determination, and electron and muon identification. This approach also allows particles from pileup interactions to be identified and enables efficient pileup mitigation methods. The data collected by CMS at a centre-of-mass energy of 8\TeV show excellent agreement with the simulation and confirm the superior PF performance at least up to an average of 20 pileup interactions. ? 2017 CERN. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033569480&doi=10.1088%2f1748-0221%2f12%2f10%2fP10003&partnerID=40&md5=786d35fd4d90c8cfceec9aa4784be36d https://scholars.lib.ntu.edu.tw/handle/123456789/575150 |
ISSN: | 17480221 | DOI: | 10.1088/1748-0221/12/10/P10003 |
顯示於: | 物理學系 |
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