The most precise measurement to date of the [Figure presented] boson hadronic decay branching fraction ratio [Figure presented] is presented. The measurement is based on a sample of proton-proton collision data from the CERN LHC collected by the CMS experiment at a center-of-mass energy of 13 TeV in 2016–2018 with an integrated luminosity of 138fb−1. The large cross section of top quark-antiquark production at the LHC offers a sizable high-purity sample of [Figure presented] bosons suitable for this measurement. Events with one charged lepton (electron or muon) and at least four jets, two tagged as bottom quark jets, are analyzed. Charm jets are tagged using the presence of a muon inside the jet. The result, [Figure presented], is consistent with the standard model prediction and is twice as precise as the current world-average value.

Measurement of the W boson decay branching fraction ratio B(W→cq)/B(W→qq¯′) in proton-proton collisions at s=13TeV

Alexe, C.;Bruschini, D.;Ligabue, F.;
2025

Abstract

The most precise measurement to date of the [Figure presented] boson hadronic decay branching fraction ratio [Figure presented] is presented. The measurement is based on a sample of proton-proton collision data from the CERN LHC collected by the CMS experiment at a center-of-mass energy of 13 TeV in 2016–2018 with an integrated luminosity of 138fb−1. The large cross section of top quark-antiquark production at the LHC offers a sizable high-purity sample of [Figure presented] bosons suitable for this measurement. Events with one charged lepton (electron or muon) and at least four jets, two tagged as bottom quark jets, are analyzed. Charm jets are tagged using the presence of a muon inside the jet. The result, [Figure presented], is consistent with the standard model prediction and is twice as precise as the current world-average value.
Measurement of the W boson decay branching fraction ratio ℬ(W → cq)∕ℬ(W → q̄q′ ) in proton-proton collisions at √�� = 13 TeV
2025
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
Charm; CMS; SMP
   Advanced Multi-Variate Analysis for New Physics Searches at the LHC
   AMVA4NewPhysics
   European Commission
   Horizon 2020 Framework Programme
   675440

   Search for Higgs bosons decaying to charm quarks
   HIGCC
   European Commission
   Horizon 2020 Framework Programme
   724704

   Direct and indirect searches for new physics in events with top quarks using LHC proton-proton collisions at the CMS detector
   LHCTOPVLQ
   European Commission
   Horizon 2020 Framework Programme
   752730

   Majorana neutrino discovery strategy with CMS
   MajorNet
   European Commission
   Horizon 2020 Framework Programme
   758316

   International Training Network for Statistics in High Energy Physics and Society
   INSIGHTS
   European Commission
   Horizon 2020 Framework Programme
   765710

   The strong interaction at the frontier of knowledge: fundamental research and applications
   STRONG-2020
   European Commission
   Horizon 2020 Framework Programme
   824093

   INnovative TRiggEr techniques for beyond the standard model PhysIcs Discovery at the LHC
   INTREPID
   European Commission
   Horizon Europe Framework Programme
   101115353

   Fundamental properties and time-scan of QCD matter at high densities and temperature exposed by jet substructure in heavy ion collisions with CMS experiment at the LHC
   QCDHighDensityCMS
   European Commission
   Horizon 2020 Framework Programme
   101002207

   Vector Boson Scattering Coordination and Action Network (VBSCan)
   European Union
   CA16108
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/157163
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