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2025-05-26
14:34

CMS Inner Tracker Module Production and Qualification for the HL-LHC Upgrade / Amrutha Samalan of the CMS Collaboration /CMS Collaboration
The High-Luminosity Large Hadron Collider (HL-LHC) operation will push the CMS experiment to its limits with a peak instantaneous luminosity of

$7.5 \times 10^{34} \text{cm}^{-2}\text{s}^{-1}$ . This demanding environment will expose the CMS Inner Tracker (IT) pixel detector to unprecedented radiation levels and extreme hit rates. [...]
CMS-CR-2025-118.- Geneva : CERN, 2025 - 10 p. Fulltext: PDF;
In : 20th Anniversary ”Trento” workshop on Advanced Silicon Radiation Detectors, Trento, It, 4 - 6 Feb 2025

Detaljerad journal

2025-05-26
14:34

Search for displaced top quark in the tracker of the CMS experiment at the LHC / Vaucelle, Paul (Strasbourg, IPHC) /CMS Collaboration
A search for a massive long-lived particle decaying to a top quark in proton-proton collisions at

$\sqrt{s}$ = 13 TeV and 13.6 TeV is presented in this paper. Long-lived particles are predicted in several extensions of the Standard Model. [...]
CMS-CR-2025-091.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 17th International Workshop on Top Quark Physics, Saint Malo, France, 22 - 27 Sep 2024

Detaljerad journal

2025-05-26
14:34

Search for dark matter with mono-Higgs signature (YSF) / Shivani Sanjay Lomte /CMS Collaboration
The discovery of the Standard Model Higgs boson extended the possibility to search for dark matter in the mono-Higgs final state. A search for dark matter produced in association with a Higgs boson decaying to a pair of bottom quarks is presented, with final state signature of b-tagged jets recoiling against large missing transverse energy. [...]
CMS-CR-2025-114.- Geneva : CERN, 2025 - 5 p. Fulltext: PDF;
In : 59th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 23 - 30 Mar 2025

Detaljerad journal

2025-05-26
14:34

Detaljerad journal

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

Detaljerad journal

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

Detaljerad journal

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

Detaljerad journal

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

$\sqrt{s}=13$ \,TeV, and corresponding to an integrated luminosity of

$137{-}140\,\mathrm{fb}^{-1}$ . 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

Detaljerad journal

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

Detaljerad journal

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

$\sim2\times10^{34}cm^{-2}s^{-1}$ to an unprecedented figure of about

$\sim7.5\times10^{34}cm^{-2}s^{-1}$ . This will allow the Compact Muon Solenoid (CMS) to collect up to

$\sim4000 fb^{-1}$ 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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