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Balazs Konya

Researcher

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Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC

Author

  • G. Aad
  • T.P.A. Åkesson
  • C. Doglioni
  • V. Hedberg
  • H. Herde
  • B. Konya
  • E. Lytken
  • R. Poettgen
  • N.D. Simpson
  • O. Smirnova
  • I. Zhizhin
  • A. Zhokin

Summary, in English

The first evidence for the Higgs boson decay to a Z 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 140 fb^{-1} for each experiment, at a center-of-mass energy of 13 TeV. The measured signal yield is 2.2±0.7 times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.

Department/s

  • Particle and nuclear physics
  • eSSENCE: The e-Science Collaboration
  • Department of Physics

Publishing year

2024

Language

English

Publication/Series

Physical Review Letters

Volume

132

Issue

2

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Keywords

  • article
  • boson
  • controlled study
  • human
  • major clinical study
  • photon

Status

Published

ISBN/ISSN/Other

  • ISSN: 1079-7114