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Article
Report number arXiv:2404.12915 ; CERN-EP-2024-072
Title Search for a resonance decaying into a scalar particle and a Higgs boson in the final state with two bottom quarks and two photons in proton–proton collisions at s = 13 TeV with the ATLAS detector
Related titleSearch for a resonance decaying into a scalar particle and a Higgs boson in the final state with two bottom quarks and two photons in proton-proton collisions at a center of mass energy of 13 TeV with the ATLAS detector
Author(s) ATLAS Collaboration  Zeige alle 2928 Autoren
Corporate Author(s) ATLAS Collaboration
Publication 2024-11-07
Imprint 22 Apr 2024
Number of pages 44
Note 44 pages in total, author list starting page 28, 20 figures, 2 tables, published in JHEP 11 (2024) 047. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2021-17
In: JHEP 2411 (2024) 047
DOI 10.1007/JHEP11(2024)047 (publication)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords Higgs physics ; exotics ; particle and resonance production ; experimental results ; Scalar Higgs production ; bb diphoton decay
Abstract A search for the resonant production of a heavy scalar X decaying into a Higgs boson and a new lighter scalar S, through the process XS(bb)H(γγ), where the two photons are consistent with the Higgs boson decay, is performed. The search is conducted using an integrated luminosity of 140 fb1 of proton-proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. The search is performed over the mass range 170 mX 1000 GeV and 15 mS 500 GeV. Parameterised neural networks are used to enhance the signal purity and to achieve continuous sensitivity in a domain of the (mX, mS) plane. No significant excess above the expected background is found and 95% CL upper limits are set on the cross section times branching ratio, ranging from 39 fb to 0.09 fb. The largest deviation from the background-only expectation occurs for (mX, mS) = (575, 200) GeV with a local (global) significance of 3.5 (2.0) standard deviations.
Copyright/License Preprint: © 2024-2025 CERN (License: CC-BY-4.0)
Publication: © 2024-2025 CERN (License: CC-BY-4.0), sponsored by SCOAP³



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


 Datensatz erzeugt am 2024-04-22, letzte Änderung am 2024-12-13


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