Measurement of the Higgs boson mass from theH→γγandH→ZZ*→4ℓchannels inppcollisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

2014/06/15 by ATLAS Collaboration, G. Aad, B. Abbott +97 · 286 citations
Physics and Astronomy · #Astrophysics #Atlas (anatomy) #Galaxy #Higgs boson #High-Energy Particle Collisions Research #Invariant mass #Large Hadron Collider #Luminosity #Nuclear physics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #hep-ex

paper · pdf · doi:10.1103/physrevd.90.052004

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 90(5) (American Physical Society) · 25 pages plus author list + cover pages (38 pages total), 9 figures, 5 tables, submitted to Physical Review D, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-12/

arxiv created 2014/06/15 · openalex publication_date 2014/09/09 · arxiv updated 2014/09/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

An improved measurement of the mass of the Higgs boson is derived from a combined fit to the reconstructed invariant mass spectra of the decay channels H and H ZZ 4l. The analysis uses the pp collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at center-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 25 fb -1 . The measured value of the Higgs boson mass is m H 125.36 AE 0.37stat AE 0.18syst GeV. This result is based on improved energy-scale calibrations for photons, electrons, and muons as well as other analysis improvements, and supersedes the previous result from ATLAS. Upper limits on the total width of the Higgs boson are derived from fits to the invariant mass spectra of the H and H ZZ 4l decay channels.

Citations

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Broken Symmetries and the Masses of Gauge Bosons
• Global Conservation Laws and Massless Particles
• Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton–proton collision data
• Broken Symmetry and the Mass of Gauge Vector Mesons
• Measurement of the properties of a Higgs boson in the four-lepton final state
• Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
• Precision Electroweak Measurements on the Z Resonance
• Muon reconstruction efficiency and momentum resolution of the ATLAS experiment in proton–proton collisions at √(s)=7 s = 7 TeV in 2010
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The RooStats Project
• The RooFit toolkit for data modeling

Cited by

• k_T k T -factorization approach to the Higgs boson production in ZZ^*→ 4ℓ Z Z ∗ → 4 ℓ channel at the LHC
• Natural Standard Model Alignment in the Two Higgs Doublet Model