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CMS Conference Reports

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2025-05-19
09:37
Search for vector-like quarks and vector-like leptons / Wang, Christina Wenlu (Fermilab) /ATLAS and CMS Collaborations
Many extensions of the Standard Model (SM) predict the existence of vector-like fermions--quarks (VLQs) and leptons (VLLs). This proceeding presents recent results from the ATLAS and CMS collaborations on searches for VLQs and VLLs using data collected at the LHC from 2016--2018 with proton-proton collisions of 13 TeV. [...]
CMS-CR-2025-113.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 59th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 23 - 30 Mar 2025

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2025-05-19
09:37
Study of energy-energy correlator of jets in PbPb collisions at CMS / Viinikainen, Jussi (Vanderbilt U.) /CMS Collaboration
Energy-energy correlator has the advantage of isolating physics of different angular scales, which has attracted a lot of interest recently to study it in heavy-ion environments. Any modification from proton-proton reference can reveal hints about the inner workings of the quark-gluon plasma. [...]
CMS-CR-2025-105.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 12th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions, Nagasaki, Nagasaki, Jp, 22 - 27 Sep 2024

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2025-05-19
09:37
Upgrade of the CMS Muon system with triple-GEM detectors performance of the GE1/1 station and detector design and testing of the ME0 station / Buonsante, Marco (INFN, Bari ; Bari U.)
The High-Luminosity LHC (HL-LHC) will deliver proton-proton collisions at 5 to 7.5 times the nominal LHC luminosity, with an expected number of 140 to 200 pp-interactions per bunch crossing. To maintain the performance of muon triggering and reconstruction under high background, the forward part of the muon spectrometer of the CMS experiment will be upgraded with Gas Electron Multipliers (GEM) and improved Resistive Plate Chambers (iRPC) detectors. [...]
CMS-CR-2025-082.- Geneva : CERN, 2025 - 5 p. Fulltext: PDF;
In : 17th Vienna Conference on Instrumentation (VCI2025), Vienna, Austria, 17 - 21 Feb 2025

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2025-05-13
17:14
Leptoquark searches at ATLAS and CMS / Neutelings, Izaak /ATLAS and CMS Collaborations
An overview of searches for leptoquarks in proton-proton collisions at ATLAS and CMS are presented, with a focus on results from the Run-2 dataset collected between 2016 and 2018 at √s=13\,TeV, and corresponding to an integrated luminosity of 137−140fb−1. In particular, recent results are highlighted..
arXiv:2505.08738; CMS-CR-2025-115.- Geneva : CERN, 2025 - 6 p. Fulltext: CR2025_115 - PDF; 2505.08738 - PDF;
In : 59th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 23 - 30 Mar 2025

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2025-05-13
17:14
Qualification of Bump Bonding in CMS Inner Tracker Pixel Modules for the Phase-2 Upgrade / Assiouras, Panagiotis (INFN, Florence) /CMS Collaboration
To fully exploit the increased luminosity of the HL-LHC, the CMS Inner Tracker is undergoing a major upgrade to withstand extreme radiation levels and data rates, while improving granularity and reducing material budget. The upgraded modules employ thin planar and 3D silicon pixel sensors, bump bonded to a new radiation-hard readout chip, the CROC, designed in 65 nm CMOS technology and powered via a serial scheme. [...]
arXiv:2505.06752; CMS-CR-2025/110.- Geneva : CERN, 2025 - 8 p. Fulltext: CR2025_110 - PDF; 2505.06752 - PDF;
In : 20th Anniversary ”Trento” workshop on Advanced Silicon Radiation Detectors, Trento, It, 4 - 6 Feb 2025

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2025-05-13
17:14
Current status of the CMS Inner Tracker upgrade for HL-LHC / Lorenzo Damenti of the CMS Collaboration /CMS Collaboration
During the High Luminosity programme of the LHC collider (called HL-LHC), planned to start in 2030, the instantaneous luminosity will be increased from ∼2×1034cm−2s−1 to an unprecedented figure of about ∼7.5×1034cm−2s−1. This will allow the Compact Muon Solenoid (CMS) to collect up to ∼4000fb−1 of integrated luminosity over a decade. In order to cope with the much higher pp-collisions rate, CMS will undergo an extensive improvement known as Phase 2 upgrade: in particular, the silicon tracker system will be entirely replaced to comply with the extremely challenging experimental conditions. This contribution will review the main upgrades of the CMS Inner Tracker and will present the most relevant design and technological choices. [...]
CMS-CR-2025-107.- Geneva : CERN, 2025 - 11 p. Fulltext: PDF;
In : 20th Anniversary ”Trento” workshop on Advanced Silicon Radiation Detectors, Trento, It, 4 - 6 Feb 2025

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2025-05-13
17:14
CMS FIPs results and prospects / Alimena, Juliette (DESY) /CMS Collaboration
The CMS Collaboration has recently written a report about the latest searches with the CMS Experiment in the dark sector. This report is a comprehensive review of dark sector searches with the CMS experiment at the LHC, using proton-proton and heavy ion collision data collected in Run 2, from 2016 to 2018, or, in some cases, from Run 1 (2011--2012) or Run 3 (2022). [...]
CMS-CR-2025-097.- Geneva : CERN, 2025 - 18 p. Fulltext: PDF;
In : FIPLHCB, Geneva, Ch, 5 - 7 Feb 2025

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2025-05-13
17:14
Study of efficiency of the GEM GE1/1 detector station with CMS Run-3 data / Thakur, Shalini (Tarapaca U.) /CMS Collaboration
The CMS muon system is being upgraded with the GE1/1 station of Gas Electron Multiplier (GEM) detectors to handle the increased muon flux in the very forward eta region. This work analyzes muon detection efficiency with the GE1/1 station using p-p collision data with center of mass energy of 13.6 TeV. [...]
CMS-CR-2025-023.- Geneva : CERN, 2025 - 6 p. Fulltext: PDF;
In : 26th DAE-BRNS High Energy Physics Symposium 2024, Varanasi, India, 19 - 23 Dec 2024

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2025-05-06
15:48
Hybrid production status of the CMS Outer Tracker for the Phase-2 Upgrade / Martin Lipinski of the CMS Collaboration /CMS Collaboration
The CMS Collaboration will exchange the whole silicon tracking system as part of the Phase-2 Upgrade. About 8000 two co-planar strip sensor (2S) modules and 5880 macro-pixel and strip sensor (PS) modules will be built for the new Outer Tracker, requiring 47520 hybrid circuits. [...]
CMS-CR-2025-108.- Geneva : CERN, 2025 - 4 p. Fulltext: PDF;
In : 17th Vienna Conference on Instrumentation (VCI2025), Vienna, Austria, 17 - 21 Feb 2025

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2025-05-06
15:48
Heavy flavour results from CMS / Konecki, Marcin Andrzej (Warsaw U.) /CMS Collaboration
The CMS experiment has delivered numerous significant measurements using data from LHC Run-2 and the ongoing Run-3. This report explains key components of the CMS detector relevant to heavy flavour physics. [...]
CMS-CR-2025-106.- Geneva : CERN, 2025 - 11 p. Fulltext: PDF;
In : 31st Cracow Epiphany Conference on the recent LHC results (Epiphany 2025), Cracow, Poland, 13 - 17 Jan 2025

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