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CMS Conference Reports

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2025-12-08
13:38
CMS outreach overview / Passaseo, Marina (INFN, Padua) /CMS Collaboration
Effective scientific communication and public outreach are essential components of modern high-energy physics research, serving to educate the public, engage stakeholders, and ensure continued support for fundamental science. This article presents a comprehensive analysis of the communication and outreach strategies implemented by the Compact Muon Solenoid (CMS) experiment at CERN, one of the flagship experiments at the Large Hadron Collider (LHC). [...]
CMS-CR-2025-286.- Geneva : CERN, 2025 - 8 p. Fulltext: PDF;
In : 2025 European Physical Society Conference on High Energy Physics (EPS-HEP 2025), Marseille, France, 7 - 11 Jul 2025

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2025-12-08
13:37
HGCAL detector performance and system validation with particle beams / Amendola, Chiara (CERN) /CMS Collaboration
The High-Granularity Calorimeter (HGCAL) is the new endcap calorimeter of CMS for operation in the High-Luminosity LHC (HL-LHC) era. Featuring 6 million silicon pads and 280'000 scintillating tiles, for an overall area of 620\,m$^{2}$ and 370\,m$^{2}$ respectively, HGCAL will deliver precise spatial, energy, and timing measurements of particles in its active volume. [...]
CMS-CR-2025-278.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 2025 European Physical Society Conference on High Energy Physics (EPS-HEP 2025), Marseille, France, 7 - 11 Jul 2025

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2025-12-08
13:37
The Present and Future of the CMS Muon System / Sharma, Archie (Aachen, Tech. Hochsch.) /CMS Collaboration
The CMS muon system is indispensable for identifying and studying key particles and processes at the LHC. A high-performance muon system not only underpins the discovery potential of CMS but also ensures the precision and reliability required for advancing our understanding of the fundamental laws of nature. [...]
CMS-CR-2025-276.- Geneva : CERN, 2025 - 12 p. Fulltext: PDF;
In : 17th Topical Seminar on Innovative Particle and Radiation Detectors , Siena, It, 15 - 19 Sep 2025

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2025-12-08
13:37
Upgrade of the CMS Drift Tube system for the High Luminosity LHC / Lunerti, Leonardo (INFN, Bologna) /CMS Collaboration
The Large Hadron Collider (LHC) will undergo a major upgrade during its third Long Shutdown (LS3) period, after which the High-Luminosity LHC (HL-LHC) era will begin. During the HL-LHC phase, proton-proton collisions are expected to be delivered at 5 to 7 times the nominal LHC instantaneous luminosity. [...]
CMS-CR-2025-273.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 17th Topical Seminar on Innovative Particle and Radiation Detectors , Siena, It, 15 - 19 Sep 2025

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2025-12-08
13:37
Recent results on Vector Like Quarks/Excited Fermions at CMS / SHEN, Xiaohe (Brown U.) /CMS Collaboration
The most recent results on the searches for the vector-like quarks and excited fermions from the CMS Collaboration are presented. These results are based on the full Run 2 $\sqrt{s}=$ 13 TeV proton-proton collision data collected by the CMS Collaboration at the LHC from 2016 to 2018, which corresponds to an integrated luminosity of 138 fb$^{-1}$. [...]
CMS-CR-2025-275.- Geneva : CERN, 2025 - 8 p. Fulltext: PDF;
In : The 32nd International Symposium on Lepton Photon Interactions at High Energies (Lepton Photon 2025), Madison, Wisconsin, Us, 25 - 29 Aug 2025

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2025-12-08
13:37
Advances in machine learning tools, software, and calibration for jet-flavor identification in CMS / Troiano, Donato (INFN, Bari ; Bari U.) /CMS Collaboration
Identification of hadronic jets originating from heavy-flavor quarks is essential to several physics analyses in high energy physics, such as studies of the properties of the top quark and the Higgs boson and searches for new physics. Recent algorithms used in the CMS experiment are developed using state-of-the-art machine-learning techniques to distinguish jets emerging from the decay of heavy flavor (charm and bottom) quarks from those arising from light-flavor (udsg) ones. [...]
CMS-CR-2025-272.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 2025 European Physical Society Conference on High Energy Physics (EPS-HEP 2025), Marseille, France, 7 - 11 Jul 2025

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2025-12-08
13:37
Searches in CMS for new physics in final states with jets / Gadkari, Divya (Rutgers U., Piscataway) /CMS Collaboration
Many new physics models such as compositeness, extra dimensions, extended Higgs sectors, supersymmetric theories, and dark sector extensions, are expected to manifest themselves in the final states with hadronic jets. This note presents searches in CMS for new phenomena in the final states that include jets, focusing on the recent results obtained using the full Run-2 data-set collected at the LHC..
CMS-CR-2025-269.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : The 32nd International Symposium on Lepton Photon Interactions at High Energies (Lepton Photon 2025), Madison, Wisconsin, Us, 25 - 29 Aug 2025

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2025-12-08
13:37
Polarization in VV production in CMS / Mondal, Susmita (Wisconsin U., Madison) /CMS Collaboration
The study of vector boson (V = W, Z) polarization in diboson production serves as an important test of electroweak symmetry breaking mechanism and can be used as a tool to search for new physics effects. This is also a first step to studying longitudinal polarization in the rare process of vector boson scattering. [...]
CMS-CR-2025-267.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : The 32nd International Symposium on Lepton Photon Interactions at High Energies (Lepton Photon 2025), Madison, Wisconsin, Us, 25 - 29 Aug 2025

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2025-12-08
13:37
Spectroscopy studies from the ATLAS and CMS experiments / Liang, Zhengchen (Tsinghua U., Beijing) ; Hu, Zhen (Tsinghua U., Beijing) /ATLAS and CMS Collaborations
Recent spectroscopy results from the ATLAS and CMS experiments at the LHC are shedding new light on the hadronic spectrum. These include the first precise measurements of the excited vector mesons $B^{+}$, $B^{0}$, and $B^{*0}_s$, alongside the observation of a new family of tetraquark candidates in the di-$J/\psi$ channel. [...]
CMS-CR-2025-258.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 17th International Conference on Heavy Quarks and Leptons, Beijing, Cn, 15 - 19 Sep 2025

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2025-12-08
13:37
Evidence for triboson ZZ$\gamma$ production in the $4l\gamma$ final state in pp collisions at 13 TeV with the CMS experiment / Vagnerini, Antonio (Nebraska U.) /CMS Collaboration
We present the first measurement of ZZ$\gamma$ production in the final state with four charged leptons and a photon using the full LHC Run 2 data set. This analysis uses the proton-proton collision data at a center-of-mass energy of $13\,\mathrm{TeV}$ collected by the CMS detector from 2016 to 2018 with a total integrated luminosity of $138\,\mathrm{fb^{-1}}$. [...]
CMS-CR-2025-256.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 2025 European Physical Society Conference on High Energy Physics (EPS-HEP 2025), Marseille, France, 7 - 11 Jul 2025

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