ATLAS searches for additional scalars and exotic Higgs boson decays with the LHC Run 2 dataset



Aad, G, Aakvaag, E, Abbott, B, Abdelhameed, S, Abeling, K, Abicht, NJ, Abidi, SH, Aboelela, M, Aboulhorma, A, Abramowicz, H
et al (show 2852 more authors) (2025) ATLAS searches for additional scalars and exotic Higgs boson decays with the LHC Run 2 dataset PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1116. pp. 184-260. ISSN 0370-1573, 1873-6270

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Abstract

This report reviews the published results of searches for possible additional scalar particles and exotic decays of the Higgs boson performed by the ATLAS Collaboration using up to 140 fb−1 of 13 TeV proton–proton collision data collected during Run 2 of the Large Hadron Collider. Key results are examined, and observed excesses, while never statistically compelling, are noted. Constraints are placed on parameters of several models which extend the Standard Model, for example by adding one or more singlet or doublet fields, or offering exotic Higgs boson decay channels. Summaries of new searches as well as extensions of previous searches are discussed. These new results have a wider reach or attain stronger exclusion limits. New experimental techniques that were developed for these searches are highlighted. Search channels which have not yet been examined are also listed, as these provide insight into possible future areas of exploration.

Item Type: Article
Uncontrolled Keywords: ATLAS, LHC, Exotic scalars, Exotic Higgses
Divisions: Faculty of Health & Life Sciences
Faculty of Science & Engineering
Faculty of Science & Engineering > School of Physical Sciences
Faculty of Health & Life Sciences > Inst. Systems, Molec & Integrative Biology > Inst. Systems, Molec & Integrative Biology
Depositing User: Symplectic Admin
Date Deposited: 28 Oct 2024 09:54
Last Modified: 23 May 2026 09:24
DOI: 10.1016/j.physrep.2024.09.002
Open Access URL: https://www.sciencedirect.com/science/article/pii/...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3186259
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