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CMS Preprints

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2025-03-09
20:52
Search for new physics in jet scaling patterns of multilepton events at $ \sqrt{s} = $ 13 TeV
A first search for beyond the standard model physics in jet scaling patterns of multilepton events is presented, using a data sample corresponding to an integrated luminosity of 138 fb$ ^{-1} $ of 13 TeV proton-proton collisions recorded by the CMS detector at the LHC. [...]
CERN-EP-2024-310 ; CMS-SUS-23-015-003. - 2025
Additional information for the analysis - CMS AuthorList - Fulltext

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2025-03-08
04:49
Machine learning in top quark physics at ATLAS and CMS / Komm, Matthias (DESY)
This note presents an overview of machine-learning-based techniques used in the study of the top quark. [...]
arXiv:2503.04289. - 6.
Fulltext

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2025-03-07
04:19
Radiation Testing of New Readout Electronics for the CMS ECAL Barrel / Härringer, Nico ; Dissertori, Günther ; Gadek, Tomasz ; Hajdas, Wojciech ; Haller, Christian ; Loukas, Nikitas ; Lustermann, Werner ; Morvaj, Ljiljana ; Singovski, Alexander ; Stachon, Krzysztof
In preparation of the operation of the CMS electromagnetic calorimeter (ECAL) barrel at the High Luminosity Large Hadron Collider (HL-LHC) the entire on-detector electronics will be replaced. [...]
arXiv:2503.03362. - 7.
Fulltext

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2025-03-06
05:43
Luminosity measurement for lead-lead collisions at $ \sqrt{\smash[b]{s_{_{\mathrm{NN}}}}}= $ 5.02 TeV in 2015 and 2018 at CMS / CMS Collaboration
Measurements of the luminosity delivered to the CMS experiment during the lead-lead data-taking periods in 2015 and 2018 are presented for the first time. [...]
arXiv:2503.03946 ; CMS-LUM-20-002 ; CERN-EP-2025-018 ; CMS-LUM-20-002-003. - 2025 - 47 p, 47.
Additional information for the analysis - CMS AuthorList - Fulltext - Fulltext

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2025-03-04
06:57
Observation of the charged-particle multiplicity dependence of $ \sigma_{\psi(2\text{S})} /\sigma_{\mathrm{J}/\psi} $ in pPb collisions at 8.16 TeV
Bound states of charm and anticharm quarks, known as charmonia, have a rich spectroscopic structure that can be used to probe the dynamics of hadron production in high-energy hadron collisions. [...]
CERN-EP-2025-006 ; CMS-HIN-24-001-003. - 2025
Additional information for the analysis - CMS AuthorList - Fulltext

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2025-02-28
15:56
CMS Outer Tracker Module Production and Integration at NISER / Rahul Kumar Agrawal
In the LHC long shutdown 3, due to start in mid-2026, the LHC will be upgraded to the High-Luminosity LHC. To address the challenges for operation at the HL-LHC, such as an increased interaction rate and higher radiation levels, an upgrade of the tracking system of the CMS detector is being built. [...]
CMS-CR-2025-031.- Geneva : CERN, 2025 - 5 p. Fulltext: PDF;
In : 26th DAE-BRNS High Energy Physics Symposium 2024, Varanasi, India, 19 - 23 Dec 2024

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2025-02-28
15:52
Advanced monitoring capabilities of the CMS Experiment for LHC Run3 and beyond / Legger, Federica (INFN, Turin) ; Tuckus, Nikodemas (CERN) ; Brij Kishor Jashal /CMS Collaboration
The CMS computing infrastructure spread globally over 150 WLCG sites forms a intricate ecosystem of computing resources, software and services. In 2024, the production computing cores breached half a million mark and storage capacity is at 250 PetaBytes on disk and 1.20 ExaBytes on Tape. [...]
CMS-CR-2025-074.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024

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2025-02-28
15:52
Optimization of distributed compute resources utilization in the CMS Global Pool / Mascheroni, Marco (UC, San Diego) ; Perez-Calero Yzquierdo, Antonio Maria (Madrid, CIEMAT) ; Kim, Hyunwoo (Fermilab) ; Florian Von Cube ; Zokaite, Vaiva (Vilnius U.) ; Frank Wurthwein /CMS Collaboration
The CMS Submission Infrastructure is the primary system for managing computing resources for CMS workflows, including data processing, simulation, and analysis. It integrates geographically distributed resources from Grid, HPC, and cloud providers into federated pools managed by HTCondor and GlideinWMS, for a total of around 500k CPU cores. [...]
CMS-CR-2025-071.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024

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2025-02-28
15:52
Commissioning and exploitation of the MareNostrum5 cluster at the Barcelona Supercomputing Center for CMS computing / Delgado Peris, Antonio (Madrid, CIEMAT) ; Flix Molina, Jose (Madrid, CIEMAT) ; Hernandez, Jonathan Matthew (UC, San Diego) ; Perez-Calero Yzquierdo, Antonio Maria (Madrid, CIEMAT) /CMS Collaboration
The MareNostrum 5 (MN5) is the newly deployed pre-exascale EuroHPC supercomputer hosted at the Barcelona Supercomputing Center (BSC) in Spain. Its 750,000-core general-purpose CPU cluster offers new opportunities for CMS data processing and simulation but also presents integration challenges within the CMS distributed computing system, particularly due to network segregation for compute nodes. [...]
CMS-CR-2025-069.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024

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2025-02-28
15:51
R and D Adoption and Progress in Full Simulation of the CMS experiment / Srimanobhas, Norraphat (Chulalongkorn U.) ; Banerjee, Sunanda (Wisconsin U., Madison) ; Cossutti, Fabio (INFN, Trieste) ; Ivantchenko, Vladimir (Dubna, JINR) ; Krammer, Natascha (Vienna, OAW) ; Muzaffar, M. S ; Pedro, Kevin Jerome (Fermilab) ; Pezzotti, L /CMS Collaboration
In this work we report on evolution of usage of Geant4 within CMSSW and adaptation of the newest Geant4 11.2.1, which is expected to be used for CMS simulation production in 2025. Physics validation results and results on CPU performance are reported. [...]
CMS-CR-2025-059.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024

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