Search for diphoton resonances in the 66 to 110 GeV mass range using pp collisions at √s = 13 TeV with the ATLAS detector

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dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbicht, N.J.
dc.contributor.authorAbidi, S.H.
dc.contributor.authorAboulhorma, A.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorAcharya, B.S.
dc.contributor.authorAdam Bourdarios, C.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAddepalli, S.V.
dc.contributor.authorAddison, M.J.
dc.contributor.authorAdelman, J.
dc.contributor.authorAdiguzel, A.
dc.contributor.authorAdye, T.
dc.contributor.authorAffolder, A.A.
dc.contributor.authorAfik, Y.
dc.contributor.authorAgaras, M.N.
dc.contributor.authoret al.
dc.date.issued2025
dc.description.abstractA search is performed for light, spin-0 bosons decaying into two photons in the 66 to 110 GeV mass range, using 140 fb⁻¹ of proton-proton collisions at √s = 13TeV produced by the Large Hadron Collider and collected by the ATLAS detector. Multivariate analysis techniques are used to define event categories that improve the sensitivity to new resonances beyond the Standard Model. A model-independent search for a generic spin-0 particle and a model-dependent search for an additional low-mass Higgs boson are performed in the diphoton invariant mass spectrum. No significant excess is observed in either search. Mass-dependent upper limits at the 95% confidence level are set in the model-independent scenario on the fiducial cross-section times branching ratio into two photons in the range of 8 fb to 53 fb. Similarly, in the model-dependent scenario upper limits are set on the total cross-section times branching ratio into two photons as a function of the Higgs boson mass in the range of 19 fb to 102 fb.
dc.description.statementofresponsibilityThe ATLAS collaboration
dc.identifier.citationJournal of High Energy Physics (JHEP), 2025; 2025(1):53-0-53-44
dc.identifier.doi10.1007/jhep01(2025)053
dc.identifier.issn1126-6708
dc.identifier.issn1029-8479
dc.identifier.orcidJackson, P. [0000-0002-0847-402X]
dc.identifier.orcidPotti, H. [0000-0002-0800-9902]
dc.identifier.orcidTing, E.X.L. [0000-0002-5886-6339]
dc.identifier.orcidWhite, M.J. [0000-0001-5474-4580]
dc.identifier.urihttps://hdl.handle.net/2440/147852
dc.language.isoen
dc.publisherSpringerOpen
dc.relation.grantARC
dc.rightsOpen Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
dc.source.urihttps://doi.org/10.1007/jhep01(2025)053
dc.subjectBeyond Standard Model; Hadron-Hadron Scattering; Higgs Physics
dc.titleSearch for diphoton resonances in the 66 to 110 GeV mass range using pp collisions at √s = 13 TeV with the ATLAS detector
dc.title.alternativeSearch for diphoton resonances in the 66 to 110 GeV mass range using pp collisions at root s = 13 TeV with the ATLAS detector
dc.typeJournal article
pubs.publication-statusPublished online

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