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2025-02-03
16:11
Gas gaps and chambers quality control of improved resistive plate chambers (iRPC) / Ali, Mohammad Ahammad (Dundee U.) /CMS Collaboration
In preparation for the Phase-II upgrade for the High-Luminosity LHC program, 72 improved Resistive Plate Chambers (iRPC) will be installed in the third and fourth endcap disks of the Compact Muon Solenoid detector during the annual technical stop 2024. This new generation of RPC detectors will operate in a low-angle momentum (extending RPC coverage from pseudorapidity \(\lvert \eta \rvert\) = 1.9 to 2.4), in a high radiation environment, and will bring a better space and time resolution for this challenging region. [...]
CMS-CR-2024-348.- Geneva : CERN, 2024 - 8 p. Fulltext: PDF;
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024

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2025-02-03
16:11
Novel ideas for CMS L1 trigger in HL-LHC using RPC ultimate timing performance / Cabrera Mora, Andres Leonardo (Andes U., Bogota) /CMS Collaboration
The CMS RPC system has been upgraded for Phase-2 with two major projects. First is the comprehensive redesign of the Link System connecting the Front-End Boards (FEBs) of existing CMS RPC chambers to the trigger processors, which leads to the full exploitation of the intrinsic time resolution of 1.6 ns. [...]
CMS-CR-2024-339.- Geneva : CERN, 2024 - 7 p. Fulltext: PDF;
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024

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2025-01-27
11:40
Searches for top associated DM production at the LHC / Stafford, Dominic William (DESY) /ATLAS and CMS Collaborations
Recent searches for dark matter (DM) produced in association with top quarks from the ATLAS and CMS experiments using data collected between 2015 and 2018 are presented. These comprise searches from both experiments for DM in association with a single top quark; an improved ATLAS search for DM in single lepton $t\bar{t}$ final states; an ATLAS search stop squarks decaying to a top quark, a charm quark and neutralinos; and a CMS search for DM produced in association with a pair of top quarks or a single top. [...]
CMS-CR-2024-354.- Geneva : CERN, 2024 - 16 p. Fulltext: PDF;
In : 17th International Workshop on Top Quark Physics, Saint Malo, France, 22 - 27 Sep 2024

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2025-01-27
11:40
An extension to the Analytical Method clustering algorithm for BMTL1 benefitting from CMS RPC timing / Raphael Gomes De Souza /CMS Collaboration
The CMS experiment has collected more than 180 fb$^{-1}$ of proton-proton collision data at a 13.6 TeV center-of-mass energy in Run 3 data taking (2022, 2023 and early 2024). The CMS RPC system faces the challenge of the LHC expected delivered instantaneous luminosity of up to 2 x 10$^{34}$ cm$^{-2}$s$^{-1}$, providing redundant information for robust muon triggering, reconstruction and identification. [...]
CMS-CR-2024-351.- Geneva : CERN, 2024 - 5 p. Fulltext: PDF;
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024

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2025-01-27
11:40
Precision EWK and QCD measurements from ATLAS, CMS, LHCb / Guglielmi, Valentina (DESY) /ATLAS, CMS and LHCB Collaborations
These proceedings present a compilation of selected recent precise standard model (SM) measurements, including findings by ATLAS, CMS, LHCb. Covered topics include studies of quantum chromodynamics (QCD), such as the latest determinations of the strong coupling $\as$, as well as the illustration of its running. [...]
CMS-CR-2024-347.- Geneva : CERN, 2024 - 10 p. Fulltext: PDF;
In : 43rd International Symposium on Physics in Collision, Athens, Gr, 22 - 25 Oct 2024

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2025-01-27
11:40
iRPC clustering algorithm and hit reconstruction / Thiel, Mauricio (Rio de Janeiro State U.) /CMS Collaboration
One of the upgrades of CMS RPC system is the installation of new chambers - the improved RPC - with a new readout technology, achieving a space resolution along the strip of about ~2cm, enabling the inclusion of the RPC hit in the CMS muon reconstruction. The main characteristic of the iRPC is the two side strip readout which makes a new clusterization algorithm necessary. [...]
CMS-CR-2024-343.- Geneva : CERN, 2024 - 5 p. Fulltext: PDF;
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024

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2025-01-27
11:40
Performance and longevity of CO$_2$ based mixtures in CMS Improved Resistive Plate Chambers in the HL-LHC environment / Gomes Pinheiro, Joao Pedro (Rio de Janeiro State U.) /CMS Collaboration
Resistive Plate Chamber (RPC) detectors are widely used in high-energy physics experiments. In the Compact Muon Solenoid (CMS), the RPC gas mixture is composed of 95.2\% C$_2$H$_2$F$_4$, which generates a large number of ion-electron pairs, 4.5\% iC$4$H${10}$ to suppress photon feedback effects, and 0.3\% SF$_6$ as an electron quencher to ensure operation in streamer-free mode. [...]
CMS-CR-2024-331.- Geneva : CERN, 2024 - 7 p. Fulltext: PDF;
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024

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2025-01-20
09:48
CMS RPC efficiency using tag-and-probe method in LHC Run 3 / Shin, Jongwon (Kyung Hee U.) /CMS Collaboration
The CMS experiment is collecting proton-proton collisions at the center-of-mass energy of 13.6TeV in LHC Run 3. The RPC detector is one of the sub-detectors of the CMS muon system which is capable of triggering and reconstruction of muons. [...]
CMS-CR-2024-335.- Geneva : CERN, 2024 - 6 p. Fulltext: PDF;
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024

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2025-01-20
09:48
Searches for long-lived particles at the LHC / Benato, Lisa (Vienna, OAW) /ATLAS, CMS and LHCB Collaborations
Recent results of searches for long-lived particles at the LHC experiments are presented. The focus of this report is on long decay lengths, beyond 1 m. [...]
CMS-CR-2024-353.- Geneva : CERN, 2024 - 9 p. Fulltext: PDF;
In : 35th Rencontres de Blois Particle Physics and Cosmology, Blois, Fr, 20 - 25 Oct 2024

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2025-01-20
09:48
CMS RPC efficiency using tag-and-probe method in LHC Run 3 / Shin, Jongwon (Kyung Hee U.) /CMS Collaboration
The CMS experiment is collecting proton-proton collisions at the center-of-mass energy of 13.6TeV in LHC Run 3. The RPC detector is one of the sub-detectors of the CMS muon system which is capable of triggering and reconstruction of muons. [...]
CMS-CR-2024-335.- Geneva : CERN, 2024 - 6 p. Fulltext: PDF;
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024

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