Evidence for the Higgs boson decay to a Z boson and a photon at the LHC

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Contributors

  • The ATLAS collaboration - , University of Bucharest, iThemba Labs, University of Pretoria, University of South Africa, University of Zululand, Cadi Ayyad University, NYU Abu Dhabi, University of Granada, CERN, University of California at Berkeley, University of Georgia (Tbilisi), Yeditepe University, Mohammed VI Polytechnic University (Author)
  • The CMS collaboration - (Author)
  • Chair of Experimental Particle Physics
  • Institute of Nuclear and Particle Physics
  • Chair of Particle Physics
  • Aix-Marseille Université
  • University of Oklahoma
  • University of Göttingen
  • Dortmund University of Technology
  • Brookhaven National Laboratory
  • 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
  • King's College London (KCL)
  • Laboratoire d'Annecy-le-Vieux de Physique des Particules LAPP
  • AGH University of Science and Technology
  • University of Toronto
  • Brandeis University
  • University of Manchester
  • Northern Illinois University
  • Istanbul University
  • Rutherford Appleton Laboratory
  • University of California at Santa Cruz
  • 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 (USTC)
  • University of Rome Tor Vergata
  • University of Valencia
  • University of Hassan II Casablanca
  • TUD Dresden University of Technology
  • Polish Academy of Sciences
  • French National Centre for Scientific Research (CNRS)
  • Universidad de Buenos Aires

Abstract

The first evidence for the Higgs boson decay to a Formula Presented boson and a photon is presented, with a statistical significance of 3.4 standard deviations. The result is derived from a combined analysis of the searches performed by the ATLAS and CMS Collaborations with proton-proton collision datasets collected at the CERN Large Hadron Collider (LHC) from 2015 to 2018. These correspond to integrated luminosities of around Formula Presented for each experiment, at a center-of-mass energy of 13 TeV. The measured signal yield is Formula Presented times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.

Details

Original languageEnglish
Article number021803
JournalPhysical review letters
Volume132
Issue number2
Publication statusPublished - 12 Jan 2024
Peer-reviewedYes

External IDs

PubMed 38277607
ORCID /0000-0001-6480-6079/work/173049558
ORCID /0000-0003-0546-1634/work/173516677

Keywords

ASJC Scopus subject areas