Measurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at $\sqrt{s}$ = 7 TeV

Abstract

Proton-proton data recorded by the ATLAS detector in 2011, at a centre-of-mass energy of 7 TeV, have been used for an improved determination of the W-boson mass and a first measurement of the W-boson width at the LHC. Recent fits to the proton parton distribution functions are incorporated in the measurement procedure and an improved statistical method is used to increase the measurement precision. The measurement of the W-boson mass yields a value of $m_W=80366.5\pm 9.8(stat.)\pm 12.5(syst.)$ MeV = $80366.5\pm 15.9$ MeV, and the width is measured as ${\Gamma }_W=2202\pm 32(stat.)\pm 34(syst.)$ MeV = $2202\pm 47$ MeV. The first uncertainty components are statistical and the second correspond to the experimental and physics-modelling systematic uncertainties. Both results are consistent with the expectation from fits to electroweak precision data. The present measurement of $m_W$ is compatible with and supersedes the previous measurement performed using the same data.

arXiv comment51 pages in total, author list starting page 34, 15 figures, 7 tables, published by European Physical Journal C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2019-24

References in corpus (44)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• 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
• New parton distributions for collider physics
• Matching NLO QCD computations and parton shower simulations
• The ATLAS Simulation Infrastructure
• Parton distributions from high-precision collider data
• New parton distribution functions from a global analysis of quantum chromodynamics
• Parton distributions in the LHC era: MMHT 2014 PDFs
• Precision Electroweak Measurements on the Z Resonance
• PHOTOS Monte Carlo: a precision tool for QED corrections in Z and W decays
• Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
• New CTEQ global analysis of quantum chromodynamics with high-precision data from the LHC
• Limits and Confidence Intervals in the Presence of Nuisance Parameters
• Matching NLO QCD and parton showers in heavy flavour production
• Improved luminosity determination in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector at the LHC
• Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs
• The Path to Proton Structure at One-Percent Accuracy
• Uncertainties of predictions from parton distribution functions II: the Hessian method
• Measurement of the $Z/{\gamma }^{\ast }$ boson transverse momentum distribution in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector
• Transverse-Momentum-Ordered Showers and Interleaved Multiple Interactions
• Update of the global electroweak fit and constraints on two-Higgs-doublet models
• Performance of the ATLAS Trigger System in 2010
• Precise Prediction for the W-Boson Mass in the Standard Model
• Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
• Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data
• Measurement of the $W$-boson mass in pp collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton-proton collision data
• Single-top production in MC@NLO
• Precision measurement and interpretation of inclusive $W^{+}$, $W^{-}$ and $Z/{\gamma }^{\ast }$ production cross sections with the ATLAS detector
• Measurement of the W Boson Mass with the D0 Detector
• Precise measurement of the W-boson mass with the CDF II detector
• Measurement of the W boson mass
• Impact of the recent measurements of the top-quark and W-boson masses on electroweak precision fits
• Measurement of the angular coefficients in $Z$-boson events using electron and muon pairs from data taken at $\sqrt{s}=8$ TeV with the ATLAS detector
• Global analysis of electroweak data in the Standard Model
• Implications of LHC search results on the W boson mass prediction in the MSSM
• Combined measurement of the Higgs boson mass from the $H\to \gamma \gamma$ and $H\to Z{Z}^{\ast }\to 4\ell$ decay channels with the ATLAS detector using $\sqrt{s}$ = 7, 8 and 13 TeV $pp$ collision data
• Measurement of the $W$ boson mass with the D0 detector
• Global Fits to Electroweak Data Using GAPP

Cited by in corpus (15)

• The Muon Magnetic Moment and Physics Beyond the Standard Model
• High-precision measurement of the W boson mass with the CMS experiment
• The Revival of $U(1{)}_{L_e-L_{\mu }}$: A Natural Solution for $(g-2{)}_{\mu }$ with a Sub-GeV Dark Matter
• A tale of $Z$+jet: SMEFT effects and the Lam-Tung relation
• A generalized statistical model for fits to parton distributions
• Precision Higgs Boson Probe of Type-II Seesaw Models
• Radiative corrections to the $\mathrm{S},\mathrm{T},\mathrm{U}$ parameters and their impact on the $W$ boson mass in the 331 model
• Fundamental Physics in 2025: Status, Decisive Targets, and Path Forward
• Observability of 2HDM charged Higgs boson in a misaligned scenario
• Sensitivity of $W$-boson measurements to low-mass right-handed neutrinos
• Impact of New Physics on Momentum-Dependent Particle Widths and Propagators
• First order electroweak radiative corrections to the decay of the polarised $W$ boson
• Constraining the heavy leptophilic neutral gauge bosons through the $Z\to {\ell }^{+}{\ell }^{-}$, $W^{\pm }\to {\ell }^{\pm }{\nu }_{\ell }$, and $h\to {\ell }^{+}{\ell }^{-}$ decays
• Parton distribution functions and strong coupling constant: MSHT
• Verifying the Resonance Schemes of Unstable Particles at Lepton Colliders