Pileup mitigation at CMS in 13 TeV data

CMS collaboration - arXiv preprint arXiv:2003.00503, 2020 - arxiv.org
With increasing instantaneous luminosity at the LHC come additional reconstruction
challenges. At high luminosity, many collisions occur simultaneously within one proton …

Performance of the CMS Level-1 trigger in proton-proton collisions at 13 TeV

CMS collaboration - arXiv preprint arXiv:2006.10165, 2020 - arxiv.org
At the start of Run 2 in 2015, the LHC delivered proton-proton collisions at a center-of-mass
energy of 13 TeV. During Run 2 (years 2015-2018) the LHC eventually reached a luminosity …

Pileup mitigation at CMS in 13 TeV data

AM Sirunyan, A Tumasyan, W Adam, F Ambrogi… - 2020 - iopscience.iop.org
At the CERN LHC, instantaneous luminosities of up to 1.5× 1034 cm− 2 s− 1 [1] are
sufficiently large for multiple proton-proton (pp) collisions to occur in the same time window …

Pileup mitigation with machine learning (PUMML)

PT Komiske, EM Metodiev, B Nachman… - Journal of High Energy …, 2017 - Springer
A bstract Pileup involves the contamination of the energy distribution arising from the
primary collision of interest (leading vertex) by radiation from soft collisions (pileup). We …

Performance of missing transverse momentum reconstruction in proton-proton collisions at 13 TeV using the CMS detector

CMS collaboration - arXiv preprint arXiv:1903.06078, 2019 - arxiv.org
The performance of missing transverse momentum (${\vec p} _ {\mathrm {T}}^\mathrm {miss}
$) reconstruction algorithms for the CMS experiment is presented, using proton-proton …

Performance of the reconstruction and identification of high-momentum muons in proton-proton collisions at 13 TeV

CMS collaboration - arXiv preprint arXiv:1912.03516, 2019 - arxiv.org
The CMS detector at the LHC has recorded events from proton-proton collisions, with muon
momenta reaching up to 1.8 TeV in the collected dimuon samples. These high-momentum …

Performance of the CMS muon trigger system in proton-proton collisions at 13 TeV

CMS collaboration - arXiv preprint arXiv:2102.04790, 2021 - arxiv.org
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 …

Pileup per particle identification

D Bertolini, P Harris, M Low, N Tran - Journal of High Energy Physics, 2014 - Springer
A bstract We propose a new method for pileup mitigation by implementing “pileup per
particle identification”(PUPPI). For each particle we first define a local shape α which probes …

Pileup mitigation at the Large Hadron Collider with graph neural networks

JA Martínez, O Cerri, M Spiropulu… - … Physical Journal Plus, 2019 - epjplus.epj.org
At the Large Hadron Collider, the high-transverse-momentum events studied by
experimental collaborations occur in coincidence with parasitic low-transverse-momentum …

Performance of CMS muon reconstruction in pp collision events at√ s= 7 TeV

CMS collaboration - Journal of Instrumentation, 2012 - iopscience.iop.org
The performance of muon reconstruction, identification, and triggering in CMS has been
studied using 40 pb− 1 of data collected in pp collisions at√ s= 7 TeV at the LHC in 2010. A …