Search for a resonance decaying into a scalar particle and a Higgs boson in the final state with two bottom quarks and two photons with 199 fb-1 of data collected at √s=13 and 13.6 TeV with the ATLAS detector



Aad, G, Aakvaag, E, Abbott, B, Abdelhameed, S, Abeling, K, Abicht, NJ, Abidi, SH, Aboelela, M, Aboulhorma, A, Abramowicz, H
et al (show 2880 more authors) (2026) Search for a resonance decaying into a scalar particle and a Higgs boson in the final state with two bottom quarks and two photons with 199 fb-1 of data collected at √s=13 and 13.6 TeV with the ATLAS detector PHYSICS LETTERS B, 877. 140425-. ISSN 0370-2693, 1873-2445

Access the full-text of this item by clicking on the Open Access link.

Abstract

A search for the resonant production of a heavy scalar X decaying into a lighter scalar S and a Higgs boson, through the process X→S(→bb¯)H(→γγ), where the two photons are consistent with the Higgs boson decay, is performed. The search is conducted using integrated luminosities of 140 and 59 fb−1 of proton–proton collision data at centre-of-mass energies of 13 and 13.6 TeV, respectively, recorded with the ATLAS detector at the LHC. The search is performed over the mass ranges of 170 ≤ m<inf>X</inf> ≤ 1000 GeV and 15 ≤ m<inf>S</inf> ≤ 500 GeV. No significant excess over the Standard Model background predictions is observed and limits at 95% confidence level are set on the product of cross section and branching fraction for the process X→S(→bb¯)H(→γγ) at 13 TeV, ranging from 9 fb to 0.06 fb.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions: Faculty of Science & Engineering
Faculty of Science & Engineering > School of Physical Sciences
Faculty of Science & Engineering > School of Physical Sciences > Physics
Depositing User: Symplectic Admin
Date Deposited: 17 Apr 2026 09:47
Last Modified: 23 Jun 2026 06:50
DOI: 10.1016/j.physletb.2026.140425
Open Access URL: https://www.sciencedirect.com/science/article/pii/...
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3198023
Disclaimer: The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate.