CERN Accelerating science

Preprints

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2024-11-04
17:52
Phase-2 CMS DAQ -- Growing from prototype boards to demonstrator systems / Hegeman, Jeroen Guido (CERN)
For the Phase-2 upgrade of the CMS experiment, the CMS central DAQ group designed and developed two custom ATCA boards. These boards provide the interfaces between the sub-detector electronics and the central CMS systems. [...]
CMS-CR-2024-294.- Geneva : CERN, 2024 - 8 p. Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2024, Glasgow, Gb, 30 Sep - 4 Oct 2024

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2024-11-04
17:52
Searches for BSM in top final states in CMS / Shang, Victor (Wisconsin U., Madison) /CMS Collaboration
Many open questions remain that require physics beyond the Standard Model. Results of two recent searches for physics beyond the Standard Model in top final states from the CMS Collaboration are presented. [...]
CMS-CR-2024-293.- Geneva : CERN, 2024 - 7 p. Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, Us, 3 - 7 Jun 2024

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2024-11-04
17:52
Ensuring Clock Phase Repeatability by Preventing Loss of the 40.078 MHz Clock in Time-Critical Detectors: A Non-disruptive Clock Switching Approach / Loukas, Nikitas (Notre Dame U.) ; Moreno, L ; Anderson, T ; Cucciati, Giacomo (Notre Dame U.) ; Eberle, Zachariah (Minnesota U.) ; Goadhouse, Stephen David (Virginia U.) ; Gorski, Thomas (Wisconsin U., Madison) ; Svetek, Ales (Wisconsin U., Madison) /CMS Collaboration
At LHC phase 2, the CMS detector electronics require precise and accurate timing to discriminate pileup events. The upgraded Back-End electronics of the barrel Electromagnetic Calorimeter supply the required high-precision clock (Time Interval Error $\sigma <$ 5 ps) to the Front-End. [...]
CMS-CR-2024-290.- Geneva : CERN, 2024 - 8 p. Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2024, Glasgow, Gb, 30 Sep - 4 Oct 2024

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2024-11-04
17:52
Searches for rare and Beyond the Standard Model processes in top quark production and decays with the CMS experiement / Bessidskaia Bylund, Olga (Rochester U.) /CMS Collaboration
With millions of top quarks produced at the LHC, it is an ideal sector for searching for rare top-quark decays. Besides flavor-changing neutral currents that are highly suppressed in the Standard Model, baryon and lepton number conservation can be probed in top quark events. In this conference proceeding, recent searches by the CMS experiment for rare and beyond the Standard Model top-quark production and decay with significantly increased sensitivity are discussed. [...]
CMS-CR-2024-285.- Geneva : CERN, 2024 - 8 p. Fulltext: PDF;
In : 31st International Workshop on Deep Inelastic Scattering, Grenoble, France, 8 - 12 Apr 2024

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2024-11-04
17:49
Hybrids pre-production results for the CMS Outer Tracker Phase-2 Upgrade / Blanchot, Georges (CERN)
The CMS Tracker Phase-2 Upgrade requires the production of two co-planar strip sensor (2S) modules, and strip and macro-pixel sensor (PS) modules to cope with the requirements of the HL-LHC. Altogether 47520 hybrid circuits are required to construct 8000 2S and 5880 PS modules. [...]
CMS-CR-2024-281.- Geneva : CERN, 2024 - 9 p. Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2024, Glasgow, Gb, 30 Sep - 4 Oct 2024

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2024-11-04
17:49
Calibration of Flavour Tagging Algorithms at the CMS Experiment - Run 3 Results and Innovations / Diekmann, Svenja (Aachen, Tech. Hochsch.) /CMS Collaboration
The efficient identification of jets originating from heavy-flavour quarks is essential for many measurements in high-energy physics, such as Higgs boson and top quark measurements as well as searches for physics beyond the standard model of particle physics. Nevertheless, differences between measured data and the simulation on which the algorithms were trained can cause performance deficits and prediction discrepancies. [...]
CMS-CR-2024-277.- Geneva : CERN, 2024 - 7 p. Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, Us, 3 - 7 Jun 2024

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2024-11-04
17:49
Searches for vector-like quarks in CMS / Oropeza Barrera, Cristina (Iberoamericana U.) /CMS Collaboration
Searches for T and B vector-like quarks in the single and pair production modes, respectively, using the full Run 2 proton-proton collision data at 13 TeV collected by the CMS experiment are presented. Limits on the production of these new particles are set in wide regions of the parameter space. [...]
CMS-CR-2024-275.- Geneva : CERN, 2024 - 7 p. Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, Us, 3 - 7 Jun 2024

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2024-11-04
17:49
Searches for Vector Like Leptons in CMS / Koraka, Charis Kleio (Wisconsin U., Madison) /CMS Collaboration
We present results from two distinct searches for Vector-Like Leptons (VLLs) conducted by the CMS experiment using data collected during LHC Run 2. The first analysis uses a model-independent approach probing multilepton final states, while the second one focuses on hadronic final states with multiple tau leptons, leveraging model-dependent techniques. [...]
CMS-CR-2024-274.- Geneva : CERN, 2024 - 10 p. Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, Us, 3 - 7 Jun 2024

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2024-11-04
17:45
LFV and related rare decays at ATLAS and CMS / Huwiler, Marc (Zurich U.) /ATLAS and CMS Collaborations
Charged Lepton Flavour Conservation and Lepton Flavour Universality are observed symmetries of the Standard Model (SM) of particle physics, with no underlying theoretical principle enforcing them. Lepton Flavour Violation (LFV) is observed in the neutrino sector, through the spontaneous oscillation of neutrinos between the three flavour families. [...]
CMS-CR-2024-265.- Geneva : CERN, 2024 - 10 p. Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference, Boston, Us, 3 - 7 Jun 2024

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2024-11-04
17:45
Electrical measurement and read-out performance of a realistic, full-scale system bench of the CMS Inner Tracker Barrel for HL-LHC / Bardelli, Giulio (INFN, Florence ; Florence U.)
Due to the harsh environment of the High-Luminosity Phase of LHC, CMS will replace the present pixel detector with a new Inner Tracker implementing 65 nm CMOS read-out chips, CROC. The modules, i.e. [...]
CMS-CR-2024-258.- Geneva : CERN, 2024 - 8 p. Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2024, Glasgow, Gb, 30 Sep - 4 Oct 2024

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