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Article
Report number arXiv:2405.20926 ; CERN-EP-2024-147
Title Search for a resonance decaying into a scalar particle and a Higgs boson in final states with leptons and two photons in proton-proton collisions at s=13s=13 TeV with the ATLAS detector
Author(s) ATLAS Collaboration  Εμφάνιση και των 2952 συγγραφέων
Corporate Author(s) ATLAS Collaboration
Publication 2024-10-11
Imprint 03 Jun 2024
Number of pages 46
Note 46 pages in total, author list starting page 29, 8 figures, 4 tables, published by JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2021-23/
In: JHEP 2410 (2024) 104
DOI 10.1007/JHEP10(2024)104 (publication)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords exotics ; particle and resonance production ; heavy scalar ; Higgs boson ; singlet scalar
Abstract A search for a hypothetical heavy scalar particle, XX, decaying into a singlet scalar particle, SS, and a Standard Model Higgs boson, HH, using 140 fb11 of proton-proton collision data at the centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the LHC is presented. The explored mass range is 300mX1000300mX1000 GeV and 170mS500170mS500 GeV. The signature of this search is one or two leptons (ee or μμ) from the decay of vector bosons originating from the SS particle, SW±W/ZZSW±W/ZZ, and two photons from the Higgs boson decay, HγγHγγ. No significant excess is observed above the expected Standard Model background. The observed (expected) upper limits at the 95% confidence level on the cross-section for ggXSHggXSH, assuming the same SWW/ZZSWW/ZZ branching ratios as for a SM-like heavy Higgs boson, are between 530 (800) fb and 120 (170) fb.
Copyright/License Preprint: © 2024 CERN (License: CC-BY-4.0)
Publication: © 2024 CERN (License: CC-BY-4.0), sponsored by SCOAP³



Corresponding record in: Inspire
Email contact: tatjana.lenz@cern.ch


 Δημιουργία εγγραφής 2024-06-03, τελευταία τροποποίηση 2024-12-18


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