Combination of searches for Higgs boson decays into a photon and a massless dark photon using pp collisions at s= 13 TeV with the ATLAS detector

Research output: Contribution to journalArticlepeer-review

Abstract

A combination of searches for Higgs boson decays into a visible photon and a massless dark photon (H → γγd) is presented using 139 fb−1 of proton-proton collision data at a centre-of-mass energy of s = 13 TeV recorded by the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on the Standard Model Higgs boson decay branching ratio is determined to be B(H → γγd) < 1.3% (1.5)%. The search is also sensitive to higher-mass Higgs bosons decaying into the same final state. The observed (expected) 95% confidence level limit on the cross-section times branching ratio ranges from 16 fb (20 fb) for mH = 400 GeV to 1.0 fb (1.5 fb) for mH = 3 TeV. Results are also interpreted in the context of a minimal simplified model. © The Author(s) 2024.
Original languageEnglish
Article number153
JournalJournal of High Energy Physics
Volume2024
Issue number8
DOIs
Publication statusPublished - 2024

Subject classification (UKÄ)

  • Subatomic Physics

Free keywords

  • Hadron-Hadron Scattering
  • Higgs Physics

Fingerprint

Dive into the research topics of 'Combination of searches for Higgs boson decays into a photon and a massless dark photon using pp collisions at s= 13 TeV with the ATLAS detector'. Together they form a unique fingerprint.

Cite this