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Measurement of the Higgs boson mass with H → γγ decays in 140 fb−1 of s=13 TeV pp collisions with the ATLAS detector

  • The ATLAS collaboration
  • Aix-Marseille Université
  • University of Oklahoma
  • University of Göttingen
  • TU Dortmund University
  • United States Department of Energy
  • Mohammed V University in Rabat
  • Tel Aviv University
  • Technion-Israel Institute of Technology
  • New York University
  • National Institute for Nuclear Physics
  • Abdus Salam International Centre for Theoretical Physics
  • Université Savoie Mont Blanc
  • AGH University of Krakow
  • Brandeis University
  • University of Manchester
  • Northern Illinois University
  • Istanbul University
  • Rutherford Appleton Laboratory
  • University of California at Santa Cruz
  • CERN
  • Institute for High Energy Physics
  • University of Pavia
  • Johannes Gutenberg University Mainz
  • Alexandru Ioan Cuza University of Iaşi
  • McGill University
  • Royal Holloway University of London
  • University of Science and Technology of China
  • University of Rome Tor Vergata
  • University of Valencia
  • University of Hassan II Casablanca
  • Weizmann Institute of Science
  • Lund University
  • Waseda University
  • University of Bonn
  • Columbia University
  • University of Victoria BC
  • Université Grenoble Alpes

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The mass of the Higgs boson is measured in the H→γγ decay channel, exploiting the high resolution of the invariant mass of photon pairs reconstructed from the decays of Higgs bosons produced in proton–proton collisions at a centre-of-mass energy s=13 TeV. The dataset was collected between 2015 and 2018 by the ATLAS detector at the Large Hadron Collider, and corresponds to an integrated luminosity of 140 fb−1. The measured value of the Higgs boson mass is 125.17±0.11(stat.)±0.09(syst.) GeV and is based on an improved energy scale calibration for photons, whose impact on the measurement is about four times smaller than in the previous publication. A combination with the corresponding measurement using 7 and 8 TeV pp collision ATLAS data results in a Higgs boson mass measurement of 125.22±0.11(stat.)±0.09(syst.) GeV. With an uncertainty of 1.1 per mille, this is currently the most precise measurement of the mass of the Higgs boson from a single decay channel.

Original languageEnglish
Article number138315
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume847
DOIs
StatePublished - Dec 10 2023

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