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2026-01-05
16:47
Multi-Scale Transformer Encoder for Di-Tau Invariant Mass Reconstruction at CMS / Camagni, Valentina (INFN, Milan Bicocca ; Milan Bicocca U.) /CMS Collaboration
A transformer-based encoder is proposed for the offline reconstruction of tau-lepton decays, with the goal of improving the estimation of the di-tau invariant mass. The model performs a regression of the transverse momentum of each tau candidate to recover the contribution carried away by neutrinos in the decay, while keeping $\eta$ and $\phi$ fixed in accordance with the collinear approximation valid in the targeted phase space. [...]
CMS-CR-2025-290.- 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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2026-01-05
16:47
Searching solo for the invisible at CMS / Mallampalli, Abhishikth (Wisconsin U., Madison) /CMS Collaboration
Despite the success of the Standard Model (SM), several fundamental questions remain unanswered, such as the nature of dark matter (DM), motivating searches for new physics. This paper summarizes three recent searches for new physics in proton-proton collisions at a center-of-mass energy of $\sqrt{s}=13$~TeV, using data recorded with the Compact Muon Solenoid (CMS) detector at the CERN Large Hadron Collider (LHC). [...]
CMS-CR-2025-271.- 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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2025-12-19
10:05
Performance of triple-GEM detectors for the ME0 system of the CMS Phase-2 Upgrade / Nenna, Felice (INFN, Bari ; Bari U.) ; Pellecchia, Antonello (INFN, Bari ; Bari U.) ; Verwilligen, Piet Omer J (INFN, Bari) /CMS Collaboration
The High-Luminosity LHC will deliver proton-proton collisions at 5-7.5 times the nominal LHC luminosity, with 140-200 pp-interactions per bunch crossing. To maintain the performance of muon triggering and reconstruction under high-rate background, the forward part of the CMS muon spectrometer will be upgraded with Gas Electron Multiplier (GEM) detectors. [...]
CMS-CR-2025-187.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 26th International Workshop on Radiation Imaging Detectors (IWORID 2025), Bratislava, Slovakia, 6 - 10 Jul 2025

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2025-12-15
16:44
Mechanical Design and Integration of the CMS Phase-2 Tracker / Rose, Pierre (CERN) /CMS Collaboration
The mechanical design of the CMS Phase-2 Tracker addresses the stringent requirements imposed by the High Luminosity LHC environment, including stability under high radiation and thermal loads, a minimal material budget, and precise alignment across large detector volumes. This article describes the engineering challenges and the mechanical solutions implemented in both the Inner Tracker and the Outer Tracker. [...]
CMS-CR-2025-294.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 33rd International Workshop on Vertex Detectors (VERTEX 2025), Knoxville, Tennessee, United States, 25 - 29 Aug 2025

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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

Úplný záznam
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

Úplný záznam
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

Úplný záznam