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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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SYSNO ASEP 0618696 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Search for diphoton resonances in the 66 to 110 GeV mass range using pp collisions at √s= 13 TeV with the ATLAS detector Author(s) Aad, G. (FR)
Abbott, B. (US)
Abeling, K. (DE)
Chudoba, Jiří (FZU-D) RID, ORCID
Federičová, Pavla (FZU-D) ORCID
Hejbal, Jiří (FZU-D) RID, ORCID
Jačka, Petr (FZU-D) ORCID
Kepka, Oldřich (FZU-D) RID, ORCID
Kroll, Jiří (FZU-D) ORCID
Kupčo, Alexander (FZU-D) RID, ORCID
Latoňová, Věra (FZU-D) ORCID
Lokajíček, Miloš (FZU-D) RID, ORCID
Lysák, Roman (FZU-D) RID, ORCID
Marčišovský, Michal (FZU-D) RID, ORCID
Mikeštíková, Marcela (FZU-D) RID, ORCID
Němeček, Stanislav (FZU-D) RID, ORCID
Šícho, Petr (FZU-D) RID, ORCID
Staroba, Pavel (FZU-D) RID, ORCID
Svatoš, Michal (FZU-D) RID, ORCID
Taševský, Marek (FZU-D) RID, ORCIDNumber of authors 2877 Article number 053 Source Title Journal of High Energy Physics. - : Springer - ISSN 1029-8479
Roč. 2025, č. 1 (2025)Number of pages 44 s. Language eng - English Country DE - Germany Keywords Beyond Standard Model ; Hadron-Hadron Scattering ; Higgs physics Subject RIV BF - Elementary Particles and High Energy Physics OECD category Particles and field physics R&D Projects EH22_008/0004632 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Research Infrastructure CERN-CZ III - 90240 - Fyzikální ústav AV ČR, v. v. i. Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 001412163300001 DOI https://doi.org/10.1007/JHEP01(2025)053 Annotation A 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 = 13 TeV 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. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2026 Electronic address https://hdl.handle.net/11104/0365525
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