Combination and summary of ATLAS dark matter searches interpreted in a 2HDM with a pseudo-scalar mediator using 139 fb<SUP>-1</SUP> of √<i>s</i>=13 TeV <i>pp</i> collision data


Aad G., Abbott B., Abeling K., Abicht N., Abidi S., Aboulhorma A., ...More

SCIENCE BULLETIN, vol.69, no.19, pp.3005-3035, 2024 (SCI-Expanded, Scopus) identifier identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 69 Issue: 19
  • Publication Date: 2024
  • Doi Number: 10.1016/j.scib.2024.06.003
  • Journal Name: SCIENCE BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3005-3035
  • Keywords: Beyond Standard Model, Dark matter, High-energy physics, Proton-proton
  • Ankara University Affiliated: Yes

Abstract

Results from a wide range of searches targeting different experimental signatures with and without missing transverse momentum (E-T(miss)) are used to constrain a Two-Higgs-Doublet Model (2HDM) with an additional pseudo-scalar mediating the interaction between ordinary and dark matter (2HDM+a). The analyses use up to 139 fb(-1) of proton-proton collision data at a centre-of-mass energy root s = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider during 2015-2018. The results from three of the most sensitive searches are combined statistically. These searches target signatures with large E-T(miss) and a leptonically decaying Z boson; large E-T(miss) and a Higgs boson decaying to bottom quarks; and production of charged Higgs bosons in final states with top and bottom quarks, respectively. Constraints are derived for several common and new benchmark scenarios in the 2HDM+a. (c) 2024 Science China Press. Published by Elsevier B.V. and Science China Press. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).