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CMS Preprints

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2024-12-22
16:13
Determination of the strong coupling and its running from measurements of inclusive jet production
The value of the strong coupling $ \alpha_\mathrm{S} $ is determined in a comprehensive analysis at next-to-next-to-leading order accuracy in quantum chromodynamics. [...]
CERN-EP-2024-327 ; CMS-SMP-24-007-003. - 2024
Additional information for the analysis - CMS AuthorList - Fulltext

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2024-12-22
06:07
Adoption of the alpaka performance portability library in the CMS software / Bocci, Andrea (CERN)
FERMILAB-SLIDES-23-090-CMS-CSAID. -
Fermilab Library Server - Fulltext

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2024-12-21
13:29
Measurement of the W boson decay branching fraction ratio $ \mathcal{B}(\mathrm{ W \to c q })/\mathcal{B}(\mathrm{{W}\to q \bar{q}{}^{'}}) $ in proton-proton collisions at $ \sqrt{s} = $ 13 TeV
The most precise measurement to date of the W boson hadronic decay branching fraction ratio $ R_\mathrm{c}^{\mathrm{W}}=\mathcal{B}(\mathrm{ W \to c q })/\mathcal{B}(\mathrm{{W}\to q \bar{q}{}^{'}}) $ is presented. [...]
CERN-EP-2024-314 ; CMS-SMP-24-009-003. - 2024
Additional information for the analysis - CMS AuthorList - Fulltext

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2024-12-21
04:20
Towards a differential $\mathrm{t\bar{t}W}$ cross section measurement at CMS / Marckx, David (Gent U. ; Rochester U.)
Top quark pair production in association with a W boson is a rare standard model process that has proven to be an intriguing puzzle for theorists and experimentalists alike. [...]
arXiv:2412.14303. -
Fulltext

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2024-12-20
17:00
Measurement of light-by-light scattering and the Breit-Wheeler process, and search for axion-like particles in ultraperipheral PbPb collisions at $ \sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = $ 5.02 TeV
Measurements of light-by-light scattering (LbL, $ \gamma\gamma\to\gamma\gamma $) and the Breit-Wheeler process (BW, $ \gamma\gamma\to\mathrm{e}^+\mathrm{e}^- $) are reported in ultraperipheral PbPb collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV. [...]
CERN-EP-2024-284 ; CMS-HIN-21-015-003. - 2024
Additional information for the analysis - CMS AuthorList - Fulltext

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2024-12-20
16:02
CMS RPC performance and operation in LHC Run 3 / 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 2024). The CMS RPC system faces the challenge of the LHC 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-2024-336.- 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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2024-12-20
12:05
Differential cross section measurements of top quark pair production for variables of the dineutrino system with the CMS experiment / Consuegra Rodríguez, Sandra (RWTH Aachen U.) /CMS Collaboration
Differential top quark pair cross sections are measured in the dilepton final state as a function of kinematic variables associated to the dineutrino system. The measurements are performed making use of the Run 2 dataset collected by the CMS experiment at the CERN LHC collider, corresponding to proton-proton collisions recorded at center of mass energy of 13 TeV and an integrated luminosity of 138 fb$^{-1}$. [...]
CMS-CR-2024-330; arXiv:2412.14806.- Geneva : CERN, 2024 - 7 p. Fulltext: CR2024_330 - PDF; 2412.14806 - PDF;
In : 17th International Workshop on Top Quark Physics, Saint Malo, France, 22 - 27 Sep 2024

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2024-12-20
12:05
Measurements with top quarks at the LHC / Knolle, Joscha (Gent U.) /ATLAS and CMS Collaborations
The top quark, the heaviest known elementary particle, plays a crucial role in advancing our understanding of fundamental physics. In this contribution, the latest measurements of top quark production and properties from the ATLAS and CMS experiments at the LHC are discussed. [...]
CMS-CR-2024-329.- 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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2024-12-20
12:04
Forward Physics at LHC - Intersection with Astrophysics / Penzo, Aldo (Iowa U.) /CMS Collaboration
LHC pp collisions at $\sqrt s$ = 14 TeV correspond to 100 PeV in the cosmic ray spectrum, reaching regions (such as the knee) whose interpretation is still debated, and whose models may be strongly influenced by LHC results on forward hadronic production, for instance as measured with CMS forward calorimeters. Other astrophysics problems that may receive a decisive input from LHC, and in particular HL-LHC, concern the interpretation of dark matter and dark energy in the universe, in correspondence with BSM particles that may be detected as LLP (Long-Lived-Particles). [...]
CMS-CR-2024-319.- Geneva : CERN, 2024 - 22 p. Fulltext: PDF;
In : 27th High-Energy Physics International Conference in Quantum Chromodynamis, Montpellier, Fr, 8 - 12 Jul 2024

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2024-12-20
12:04
An overview of the CMS High Granularity Calorimeter / Akgun, Bora (Bogazici U.) /CMS Collaboration
Calorimetry at the High Luminosity LHC (HL-LHC) faces many challenges, particularly in the forward direction such as, radiation tolerance and large in-time event pileup. To meet these challenges, the CMS Collaboration is preparing to replace its current endcap calorimeters for the HL-LHC era with a high-granularity calorimeter (HGCAL), featuring an unprecedented transverse and longitudinal segmentation, for both the electromagnetic and hadronic compartments, with 5D information (space-time-energy) read out. [...]
CMS-CR-2024-307.- Geneva : CERN, 2024 - 7 p. Fulltext: PDF;
In : The International Conference on New Frontiers in Physics 2024, Kolymbari, Gr, 26 Aug - 4 Sep 2024

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