CERN Accelerating science

CMS Notes

უკანასკნელი დამატებები:
2025-09-29
17:56
Measurement of four-point energy-energy correlator projections in Z+jets events / The CMS Collaboration /CMS Collaboration
Energy-energy correlators are rapidly emerging as a powerful tool for the study of jet substructure. The resolved structure of high-order EECs is sensitive to the detailed dynamics of jet formation, and has the potential to provide both a useful probe of quantum chromodynamics and a powerful input for tuning of phenomenological parton shower models. [...]
CMS-NOTE-2025-011; CERN-CMS-NOTE-2025-011.- Geneva : CERN, 2025 - 21 p. Fulltext: PDF;

დეტალური ჩანაწერი
2025-09-29
17:56
Enhanced reconstruction of dileptonic top quark-antiquark events using supervised machine learning methods / CMS Collaboration /CMS Collaboration
The reconstruction of the top quark-antiquark $\mathrm{t\bar{t}}$ kinematic system is crucial for precision measurements of top quark properties and plays a central role in many searches for beyond standard model physics involving top quarks at the LHC. In the dileptonic decay channel of $\mathrm{t\bar{t}}$, the presence of two neutrinos poses a significant challenge to reconstruct the $\mathrm{t\bar{t}}$ kinematic system. [...]
CMS-NOTE-2025-010; CERN-CMS-NOTE-2025-010.- Geneva : CERN, 2025 - 22 p. Fulltext: PDF;

დეტალური ჩანაწერი
2025-08-25
12:44
Evaluation of 3D pixel silicon sensors for the CMS Phase-2 Inner Tracker / Clara Lasaosa Garcia ; Zuolo, Davide (Colorado U.)
The high-luminosity upgrade of the CERN LHC requires the replacement of the CMS tracking detector to cope with the increased radiation fluence while maintaining its excellent performance. An extensive R\&D; program, aiming at using 3D pixel silicon sensors in the innermost barrel layer of the detector, has been carried out by CMS in collaboration with the FBK (Trento, Italy) and CNM (Barcelona, Spain) foundries. [...]
CMS-NOTE-2025-009; CERN-CMS-NOTE-2025-009.- Geneva : CERN, 2024 - 33 p. Fulltext: PDF;

დეტალური ჩანაწერი
2025-07-21
10:06
Projections for indirect searches for new physics in the production of top quarks in association with additional leptons / The CMS Collaboration /CMS Collaboration
In the context of the Update on the European Strategy in Particle Physics, we present the current expectation for the achievable sensitivity reach of indirect searches for new physics in top quark production in association with additional leptons. The projections are based on a global analysis in the effective field theory framework performed with data collected in the CMS experiment during the LHC Run 2..
CMS-NOTE-2025-008; CERN-CMS-NOTE-2025-008.- Geneva : CERN, 2025 - 15 p. Fulltext: PDF;

დეტალური ჩანაწერი
2025-03-27
13:43
HL-LHC projections for single Higgs boson measurements at the CMS experiment / CMS Collaboration /CMS Collaboration
This note describes HL-LHC projection studies based on the Run 2 CMS measurements in the $\mathrm{H\rightarrow\gamma\gamma}$ and $\mathrm{H\rightarrow Z\gamma}$ decay channels. The expected constraints are extracted for integrated luminosities of 2000 and 3000 fb$^{-1}$. [...]
CMS-NOTE-2025-007; CERN-CMS-NOTE-2025-007.- Geneva : CERN, 2025 - 20 p. Fulltext: PDF;

დეტალური ჩანაწერი
2025-03-27
13:43
Projection of CMS experimental reach on HH production at HL-LHC / CMS Collaboration /CMS Collaboration
This note presents an updated projection to the high-luminosity LHC for searches for resonant and nonresonant Higgs boson pair production with the CMS experiment. The projections are based on analyses of data recorded by the CMS experiment during LHC Run 2. [...]
CMS-NOTE-2025-006; CERN-CMS-NOTE-2025-006.- Geneva : CERN, 2025 - 11 p. Fulltext: PDF;

დეტალური ჩანაწერი
2025-03-27
13:43
CMS Offline Software and Computing input to the European Strategy for Particle Physics - 2026 update / CMS Offline Software ; Computing
This document outlines the CMS Offline Software and Computing strategy in preparation for the High-Luminosity LHC (HL-LHC) era and serves as input to the 2026 update of the European Strategy for Particle Physics. As CMS faces a significant increase in data volume, event complexity, and computing demands in Phase-2, this report details the necessary evolution of software, computing models, infrastructure, and sustainability practices. [...]
CMS-NOTE-2025-005; CERN-CMS-NOTE-2025-005.- Geneva : CERN, 2025 - 14 p.

დეტალური ჩანაწერი
2025-03-27
13:43
CMS flavor physics projections for the update of the European Strategy for Particle Physics / CMS Collaboration /CMS Collaboration
Projections of the CMS experiment's sensitivity at the HL-LHC to various flavour physics observables are presented. The results are based on measurements from the dataset collected by CMS during LHC Run 2 in proton-proton collisions at a center-of-mass energy of 13 TeV [...]
CMS-NOTE-2025-004; CERN-CMS-NOTE-2025-004.- Geneva : CERN, 2025 - 26 p. Fulltext: PDF;

დეტალური ჩანაწერი
2025-03-24
13:03
HL-LHC projections for searches for new resonances / The CMS Collaboration /CMS Collaboration
Sensitivity estimates to search for new spin-0 resonances at HL-LHC are presented in the decay channels to two Z bosons or two top quarks. Using searches conducted with Run 2 data collected by the CMS detector from 2016 to 2018 at a center-of-mass energy of 13 TeV, results are projected to integrated luminosities of 4 $\mathrm{ab}^{-1}$ and 6 $\mathrm{ab}^{-1}$, at a center-of-mass energy of 14 TeV, corresponding to the sum of data collected by ATLAS and CMS detectors. [...]
CMS-NOTE-2025-003; CERN-CMS-NOTE-2025-003.- Geneva : CERN, 2025 - 8 p. Fulltext: PDF;

დეტალური ჩანაწერი
2025-03-24
13:03
Projections for top quark mass measurements at the HL-LHC / The CMS Collaboration /CMS Collaboration
In the context of the Update on the European Strategy in Particle Physics, we present the current expectation for the achievable precision in top quark mass measurements at the HL-LHC. The projections are based on two methods that are expected to profit significantly from the large amount of data expected at the HL-LHC..
CMS-NOTE-2025-002; CERN-CMS-NOTE-2025-002.- Geneva : CERN, 2025 - 8 p. Fulltext: PDF;

დეტალური ჩანაწერი