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2023-12-11
16:33
CMS results on flavor spectroscopy / Sadangi, Priyanka (Bhubaneswar, NISER) /CMS Collaboration
The CMS experiment at the LHC has reported new discoveries in flavor spectroscopy. In this talk the observation of $\Xi_b$(6100)$^{-}$ baryon, the decay $\Lambda_{b}^{0} \rightarrow J/\psi \Xi^{-} K^{+}$, the first observation of $\eta \rightarrow \mu^{+}\mu^{-}\mu^{+}\mu^{-} $decay, and exotic resonances near the $J/\psi J/\psi$ threshold are presented. [...]
CMS-CR-2023-297.- Geneva : CERN, 2023 - 7 p. Fulltext: PDF;
In : 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023

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2023-12-11
16:33
Radiation Hardness and Quality Validation of the On-Detector Electronics for the CMS Drift Tubes Upgrade / Bergnoli, Antonio (INFN, Padua)
In view of the High Luminosity LHC upgrade, the so-called Phase 2 upgrade, the electronics of the Drift Tubes (DT) sub-detector of CMS will undergo a complete innovation. Requirements in terms of trigger rate will exceed the capabilities of the present electronics. Thus, all the on-detector electronics together with the associated back-end need to be replaced. [...]
CMS-CR-2023-288.- Geneva : CERN, 2023 - 9 p. Fulltext: PDF;
In : 16th Topical Seminar on Innovative Particle and Radiation Detectors, Siena, It, 25 - 29 Sep 2023

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2023-12-11
16:33
Four top quark production searches and cross section measurements at the LHC / Van Den Bossche, Niels (Gent U.) /ATLAS and CMS Collaborations
Four top quark production is a rare standard model that has been observed for the first time in proton-proton collisions at $\sqrt{s} = 13$\,TeV at the CERN LHC by both the ATLAS and CMS Collaborations. Both observations were made in the same-sign dilepton and multilepton final states of the process and are presented in this contribution. [...]
CMS-CR-2023-285.- Geneva : CERN, 2023 - 7 p. Fulltext: PDF;
In : 16th International Workshop on Top Quark Physics, Traverse City, Michigan, Us, 24 - 29 Sep 2023

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2023-12-11
16:33
Design validation of the CMS Phase-2 Triple-GEM Detectors / Simone, Federica Maria (INFN, Bari ; Bari U.) ; Pellecchia, Antonello (INFN, Bari ; Bari U.) ; Verwilligen, Piet Omer J (INFN, Bari)
The High-Luminosity LHC will deliver proton-proton collisions at 5.0-7.5 times the nominal LHC luminosity, with an expected number of 140-200 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 detectors. [...]
CMS-CR-2023-284.- Geneva : CERN, 2023 - 9 p. Fulltext: PDF;
In : 16th Topical Seminar on Innovative Particle and Radiation Detectors, Siena, It, 25 - 29 Sep 2023

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2023-12-11
16:33
Hybrid designs and kick-off production experience for the CMS Phase-2 Upgrade / Kovacs, Mark Istvan (CERN) /CMS Collaboration
The CMS Tracker Phase-2 Upgrade requires the production of new sensor modules to cope with the requirements of the HL-LHC. The two main building blocks of the Outer Tracker are the Strip-Strip and Pixel-Strip modules. [...]
CMS-CR-2023-276.- Geneva : CERN, 2023 - 8 p. Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2023 (TWEPP 2023), Geremeas, Sardinia, Italy, 1 - 6 Oct 2023

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2023-12-11
16:30
CMS Outer Tracker Phase-2 Upgrade on-module powering / Zografos, Angelos (CERN) ; Blanchot, Georges (CERN) ; Kovacs, Mark Istvan (CERN) ; Mateos Dominguez, Irene (CERN) ; Schleidweiler, Kevin (CERN) ; Szydlik, Patryk (CERN)
The CMS Tracker Phase 2 Upgrade for the High Luminosity Large Hadron Collider will use two module types, which contain different sensor configurations and custom ASICs. Guaranteeing the power integrity of all modules for the full lifetime of the detector is crucial for the detector performance. [...]
CMS-CR-2023-259.- Geneva : CERN, 2023 - 8 p. Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2023 (TWEPP 2023), Geremeas, Sardinia, Italy, 1 - 6 Oct 2023

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2023-12-11
16:29
Testing a Neural Network for Anomaly Detection in the CMS Level-1 Global Trigger test crate during Run 3 / Zipper, Noah Alexander (Colorado U.) /CMS Collaboration
We present the deployment and testing of an autoencoder trained for unbiased detection of new physics signatures in the CMS Global Trigger test crate during LHC Run 3. The GT test crate is a copy of the main GT system, receiving the same input data, but whose output is not used to trigger the readout of CMS, providing a platform for thorough testing of new trigger algorithms on live data, but without interrupting data taking. [...]
CMS-CR-2023-255.- Geneva : CERN, 2023 - 8 p. Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2023 (TWEPP 2023), Geremeas, Sardinia, Italy, 1 - 6 Oct 2023

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2023-12-11
16:26
Performance of H2GCROC3, the readout ASIC of SiPMs for the back hadronic sections of the CMS High Granularity Calorimeter. / Gonzalez Martinez, Jose David (Ec. Polytech., OMEGA) /CMS Collaboration
H2GCROC is the 130nm CMOS ASIC designed to read out the SiPMs coupled to the scintillating tiles of the back hadronic sections of CMS HGCAL. Each of its 72 channels comprises a current conveyor, a high-gain preamplifier, a shaper, an ADC to read the energy, and two discriminators connected to TDCs for time-of-arrival and time-over-threshold information, respectively. [...]
CMS-CR-2023-246.- Geneva : CERN, 2023 - 8 p. Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2023 (TWEPP 2023), Geremeas, Sardinia, Italy, 1 - 6 Oct 2023

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2023-12-11
16:26
Design of the CMS High Granularity Calorimeter trigger primitive generator system / Chiusi, Marco (Ecole Polytechnique) /CMS Collaboration
The CMS collaboration has chosen a novel high granularity calorimeter (HGCAL) to instrument the endcap regions as part of its upgrade for the high luminosity LHC. The HGCAL will have fine segmentation in both the transverse and longitudinal directions and will be the first such calorimeter specifically optimised for particle flow reconstruction to operate at a colliding-beam experiment. [...]
CMS-CR-2023-221.- Geneva : CERN, 2023 - 6 p. Fulltext: PDF;
In : 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023

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2023-12-04
11:52
ttbar differential and inclusive measurements / Walter, David (CERN) /ATLAS and CMS Collaborations
This report summarizes recent results of inclusive and differential tt cross section measurements from the ATLAS and CMS Collaborations at the LHC. Measurements at sqrt(s) = 7, 8, 13, and 13.6 TeV are compared to state-of-the-art theory predictions, using different PDF sets, matrix element calculations, or parton shower models. [...]
CMS-CR-2023-292.- Geneva : CERN, 2023 - 7 p. Fulltext: PDF;
In : 16th International Workshop on Top Quark Physics, Traverse City, Michigan, Us, 24 - 29 Sep 2023

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