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

Publication ,  Journal Article
Aad, G; Aakvaag, E; Abbott, B; Abdelhameed, S; Abeling, K; Abicht, NJ; Abidi, SH; Aboelela, M; Aboulhorma, A; Abramowicz, H; Abreu, H; Adye, T ...
Published in: Physics Reports
April 22, 2025
Published version (DOI)

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.

Duke Scholars

Ashutosh V. Kotwal
Author Ashutosh V. Kotwal Physics
Mark C. Kruse
Author Mark C. Kruse Physics

Published In

Physics Reports

DOI

10.1016/j.physrep.2024.09.002

ISSN

0370-1573

Publication Date

April 22, 2025

Volume

1116

Start / End Page

184 / 260

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Chicago
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Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N. J., … Antipov, E. (2025). ATLAS searches for additional scalars and exotic Higgs boson decays with the LHC Run 2 dataset. Physics Reports, 1116, 184–260. https://doi.org/10.1016/j.physrep.2024.09.002
Aad, G., E. Aakvaag, B. Abbott, S. Abdelhameed, K. Abeling, N. J. Abicht, S. H. Abidi, et al. “ATLAS searches for additional scalars and exotic Higgs boson decays with the LHC Run 2 dataset.” Physics Reports 1116 (April 22, 2025): 184–260. https://doi.org/10.1016/j.physrep.2024.09.002.
Aad G, Aakvaag E, Abbott B, Abdelhameed S, Abeling K, Abicht NJ, et al. ATLAS searches for additional scalars and exotic Higgs boson decays with the LHC Run 2 dataset. Physics Reports. 2025 Apr 22;1116:184–260.
Aad, G., et al. “ATLAS searches for additional scalars and exotic Higgs boson decays with the LHC Run 2 dataset.” Physics Reports, vol. 1116, Apr. 2025, pp. 184–260. Scopus, doi:10.1016/j.physrep.2024.09.002.
Aad G, Aakvaag E, Abbott B, Abdelhameed S, Abeling K, Abicht NJ, Abidi SH, Aboelela M, Aboulhorma A, Abramowicz H, Abreu H, Abulaiti Y, Acharya BS, Ackermann A, Adam Bourdarios C, Adamczyk L, Addepalli SV, Addison MJ, Adelman J, Adiguzel A, Adye T, Affolder AA, Afik Y, Agaras MN, Agarwala J, Aggarwal A, Agheorghiesei C, Ahmad A, Ahmadov F, Ahmed WS, Ahuja S, Ai X, Aielli G, Aikot A, Ait Tamlihat M, Aitbenchikh B, Akbiyik M, Åkesson TPA, Akimov AV, Akiyama D, Akolkar NN, Aktas S, Al Khoury K, Alberghi GL, Albert J, Albicocco P, Albouy GL, Alderweireldt S, Alegria ZL, Aleksa M, Aleksandrov IN, Alexa C, Alexopoulos T, Alfonsi F, Algren M, Alhroob M, Ali B, Ali HMJ, Ali S, Alibocus SW, Aliev M, Alimonti G, Alkakhi W, Allaire C, Allbrooke BMM, Allen JF, Allendes Flores CA, Allport PP, Aloisio A, Alonso F, Alpigiani C, Alsolami ZMK, Alvarez Estevez M, Alvarez Fernandez A, Alves Cardoso M, Alviggi MG, Aly M, Amaral Coutinho Y, Ambler A, Amelung C, Amerl M, Ames CG, Amidei D, Amirie KJ, Amor Dos Santos SP, Amos KR, An S, Ananiev V, Anastopoulos C, Andeen T, Anders JK, Anderson AC, Andrean SY, Andreazza A, Angelidakis S, Angerami A, Anisenkov AV, Annovi A, Antel C, Antipov E. ATLAS searches for additional scalars and exotic Higgs boson decays with the LHC Run 2 dataset. Physics Reports. 2025 Apr 22;1116:184–260.
Journal cover image

Published In

Physics Reports

DOI

10.1016/j.physrep.2024.09.002

ISSN

0370-1573

Publication Date

April 22, 2025

Volume

1116

Start / End Page

184 / 260

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 02 Physical Sciences
  • 01 Mathematical Sciences