Performance of the CMS muon trigger system in proton-proton collisions at root s=13 TeV
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
The muon trigger system of the CMS experiment uses a combination of hardware and software to identify events containing a muon. During Run 2 (covering 2015–2018) the LHC achieved instantaneous luminosities as high as 2 × 1034 while delivering proton-proton collisions at √(s) = 13. The challenge for the trigger system of the CMS experiment is to reduce the registered event rate from about 40MHz to about 1kHz. Significant improvements important for the success of the CMS physics program have been made to the muon trigger system via improved muon reconstruction and identification algorithms since the end of Run 1 and throughout the Run 2 data-taking period. The new algorithms maintain the acceptance of the muon triggers at the same or even lower rate throughout the data-taking period despite the increasing number of additional proton-proton interactions in each LHC bunch crossing. In this paper, the algorithms used in 2015 and 2016 and their improvements throughout 2017 and 2018 are described. Measurements of the CMS muon trigger performance for this data-taking period are presented, including efficiencies, transverse momentum resolution, trigger rates, and the purity of the selected muon sample. This paper focuses on the single- and double-muon triggers with the lowest sustainable transverse momentum thresholds used by CMS. The efficiency is measured in a transverse momentum range from 8 to several hundred.
Date Issued
2021-07-01
Date Acceptance
2021-04-06
Citation
Journal of Instrumentation, 2021, 16 (7), pp.1-54
ISSN
1748-0221
Publisher
IOP Publishing
Start Page
1
End Page
54
Journal / Book Title
Journal of Instrumentation
Volume
16
Issue
7
Copyright Statement
© 2021 CERN for the benefit of the CMS collaboration. Published by
IOP Publishing Ltd on behalf of Sissa Medialab. Original content from
this work may be used under the terms of the Creative Commons Attribution 4.0 licence.
Any further distribution of this work must maintain attribution to the author(s) and the
title of the work, journal citation and DOI.
IOP Publishing Ltd on behalf of Sissa Medialab. Original content from
this work may be used under the terms of the Creative Commons Attribution 4.0 licence.
Any further distribution of this work must maintain attribution to the author(s) and the
title of the work, journal citation and DOI.
License URL
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000791152800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Instruments & Instrumentation
Large detector systems for particle and astroparticle physics
Muon spectrometers
Science & Technology
Technology
Trigger detectors
Publication Status
Published
Article Number
ARTN P07001
Date Publish Online
2021-07-02