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Search for Dark Matter Produced in Association with a Dark Higgs Boson in the ⁢¯ Final State Using ⁢ Collisions at √=13  TeV with the ATLAS Detector

Aad, G. ; Åkesson, T.P.A. LU orcid ; Astrand, K.S.V. LU ; Doglioni, C. LU ; Ekman, P.A. LU orcid ; Hedberg, V. LU ; Herde, H. LU orcid ; Konya, B. LU ; Lytken, E. LU orcid and Poettgen, R. LU orcid , et al. (2025) In Physical Review Letters 134(12).
Abstract
A search is performed for dark matter particles produced in association with a resonantly produced pair of (Formula presented)-quarks with (Formula presented) using (Formula presented) of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. This signature is expected in extensions of the standard model predicting the production of dark matter particles, in particular those containing a dark Higgs boson (Formula presented) that decays into (Formula presented). The highly boosted (Formula presented) topology is reconstructed using jet reclustering and a new identification algorithm. This search places stringent constraints across regions of the dark Higgs model parameter space that satisfy... (More)
A search is performed for dark matter particles produced in association with a resonantly produced pair of (Formula presented)-quarks with (Formula presented) using (Formula presented) of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. This signature is expected in extensions of the standard model predicting the production of dark matter particles, in particular those containing a dark Higgs boson (Formula presented) that decays into (Formula presented). The highly boosted (Formula presented) topology is reconstructed using jet reclustering and a new identification algorithm. This search places stringent constraints across regions of the dark Higgs model parameter space that satisfy the observed relic density, excluding dark Higgs bosons with masses between 30 and 150 GeV in benchmark scenarios with (Formula presented) mediator masses up to 4.8 TeV at 95% confidence level. © 2025 CERN, for the ATLAS Collaboration. (Less)
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author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Benchmarking, Colliding beam accelerators, Dark Matter, A-center, ATLAS detectors, Center-of-mass energies, Centre-of-mass energies, Dark matter, Dark matter particles, Final state, Higgs boson, Proton proton collisions, The standard model, Bosons
in
Physical Review Letters
volume
134
issue
12
article number
121801
publisher
American Physical Society
external identifiers
  • scopus:105001138945
  • pmid:40215501
ISSN
0031-9007
DOI
10.1103/PhysRevLett.134.121801
language
English
LU publication?
yes
id
18eb773b-9fea-42c8-963d-671887d0d380
date added to LUP
2026-03-06 08:18:38
date last changed
2026-03-07 03:46:02
@article{18eb773b-9fea-42c8-963d-671887d0d380,
  abstract     = {{A search is performed for dark matter particles produced in association with a resonantly produced pair of (Formula presented)-quarks with (Formula presented) using (Formula presented) of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. This signature is expected in extensions of the standard model predicting the production of dark matter particles, in particular those containing a dark Higgs boson (Formula presented) that decays into (Formula presented). The highly boosted (Formula presented) topology is reconstructed using jet reclustering and a new identification algorithm. This search places stringent constraints across regions of the dark Higgs model parameter space that satisfy the observed relic density, excluding dark Higgs bosons with masses between 30 and 150 GeV in benchmark scenarios with (Formula presented) mediator masses up to 4.8 TeV at 95% confidence level. © 2025 CERN, for the ATLAS Collaboration.}},
  author       = {{Aad, G. and Åkesson, T.P.A. and Astrand, K.S.V. and Doglioni, C. and Ekman, P.A. and Hedberg, V. and Herde, H. and Konya, B. and Lytken, E. and Poettgen, R. and Simpson, N.D. and Smirnova, O. and Wallin, E.J. and Zwalinski, L.}},
  issn         = {{0031-9007}},
  keywords     = {{Benchmarking; Colliding beam accelerators; Dark Matter; A-center; ATLAS detectors; Center-of-mass energies; Centre-of-mass energies; Dark matter; Dark matter particles; Final state; Higgs boson; Proton proton collisions; The standard model; Bosons}},
  language     = {{eng}},
  number       = {{12}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Search for Dark Matter Produced in Association with a Dark Higgs Boson in the ⁢¯ Final State Using ⁢ Collisions at √=13  TeV with the ATLAS Detector}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.134.121801}},
  doi          = {{10.1103/PhysRevLett.134.121801}},
  volume       = {{134}},
  year         = {{2025}},
}