Measurement of the jet mass in hadronic decays of boosted W bosons at 13 TeV and extraction of the W boson mass
arXiv:2603.19963 · doi:10.1007/JHEP07(2026)054
Abstract
The jet mass of W bosons decaying to a quark-antiquark pair is measured in W+jets events from proton-proton collisions at a center-of-mass energy of 13 TeV. The data used were collected by the CMS experiment at the CERN LHC and correspond to an integrated luminosity of 138 fb. Hadronic decays of W bosons with high momenta produce strongly collimated decay products due to the large Lorentz boost, and are reconstructed as single large-radius jets. These jets have a characteristic substructure that is exploited to distinguish them from the large background of quark- and gluon-initiated jets. The jet mass is computed using the soft-drop algorithm, which suppresses soft wide-angle radiation that leads to a broadening of the jet mass distribution. For the first time, unfolded measurements are presented of the double-differential W+jets cross section as a function of the jet transverse momentum and soft-drop mass. From these distributions, the W boson mass is obtained, with a value of 80.83 0.55 GeV, achieving the smallest uncertainty available today from an all-jets final state at a hadron collider.
arXiv commentReplaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures and tables, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-24-012 (CMS Public Pages)
References in corpus (30)
- The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
- The anti-k_t jet clustering algorithm
- FastJet user manual
- A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
- A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
- Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
- Parton distributions from high-precision collider data
- Herwig 7.0 / Herwig++ 3.0 Release Note
- A Positive-Weight Next-to-Leading-Order Monte Carlo for Heavy Flavour Hadroproduction
- Better Jet Clustering Algorithms
- Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
- Jet substructure as a new Higgs search channel at the LHC
- Soft Drop
- Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
- Description and performance of track and primary-vertex reconstruction with the CMS tracker
- Merging meets matching in MC@NLO
- Towards an understanding of jet substructure
- ParticleNet: Jet Tagging via Particle Clouds
- Energy Correlation Functions for Jet Substructure
- Pileup Per Particle Identification
- Jet Substructure at the Large Hadron Collider: A Review of Recent Advances in Theory and Machine Learning
- Jet Substructure at the Large Hadron Collider: Experimental Review
- New Angles on Energy Correlation Functions
- Radiative corrections to the neutral-current Drell-Yan process in the Standard Model and its minimal supersymmetric extension
- Giant QCD K-factors beyond NLO
- Precise predictions for V+jets dark matter backgrounds
- TUnfold: an algorithm for correcting migration effects in high energy physics
- The CMS statistical analysis and combination tool: COMBINE
- Thinking outside the ROCs: Designing Decorrelated Taggers (DDT) for jet substructure
- Prospects for a measurement of the boson mass in the all-jets final state at hadron colliders