Performance of the missing transverse momentum triggers for the ATLAS detector during Run-2 data taking

The ATLAS collaboration

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

The factor of four increase in the LHC luminosity, from 0.5 × 1034 cm−2s−1 to 2.0 × 1034cm−2s−1, and the corresponding increase in pile-up collisions during the 2015–2018 data-taking period, presented a challenge for the ATLAS trigger, particularly for those algorithms that select events with missing transverse momentum. The output data rate at fixed threshold typically increases exponentially with the number of pile-up collisions, so the legacy algorithms from previous LHC data-taking periods had to be tuned and new approaches developed to maintain the high trigger efficiency achieved in earlier operations. A study of the trigger performance and comparisons with simulations show that these changes resulted in event selection efficiencies of > 98% for this period, meeting and in some cases exceeding the performance of similar triggers in earlier run periods, while at the same time keeping the necessary bandwidth within acceptable limits. [Figure not available: see fulltext.]

本文言語英語
論文番号80
ジャーナルJournal of High Energy Physics
2020
8
DOI
出版ステータス出版済み - 8 1 2020

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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