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Search for dark matter produced in association with a dark higgs boson in the bb[bar] final state using pp collisions at √s=13 TeV with the ATLAS detector

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A search is performed for dark matter particles produced in association with a resonantly produced pair of b - quarks with 30 < mbb < 150 GeV using 140 fb-1 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...

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Main Authors: Aad, Georges (Author) , Ackermann, Anke (Author) , Baltes, Lisa Marie (Author) , Bartels, Falk (Author) , Dittmeier, Sebastian (Author) , Dunford, Monica (Author) , Franchino, Silvia (Author) , Junkermann, Thomas (Author) , Mkrtchyan, Tigran (Author) , Rassloff, Damir Fabrice (Author) , Sauer, Christof (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author) , Sothilingam, Varsiha (Author) , Stamen, Rainer (Author) , Starovoitov, Pavel (Author) , Vigani, Luigi (Author) , Wessels, Martin (Author) , Zinßer, Joachim (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 26 March 2025
In: Physical review letters
Year: 2025, Volume: 134, Issue: 12, Pages: 1-24
ISSN:1079-7114
DOI:10.1103/PhysRevLett.134.121801
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.134.121801
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.134.121801
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Author Notes:G. Aad et al. (ATLAS Collaboration*)
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Summary:A search is performed for dark matter particles produced in association with a resonantly produced pair of b - quarks with 30 < mbb < 150 GeV using 140 fb-1 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 s that decays into bb[bar]. The highly boosted s → bb[bar] 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 Z′ mediator masses up to 4.8 TeV at 95% confidence level.
Item Description:*ATLAS Collaboration: G. Aad, A. Ackermann, L.M. Baltes, F. Bartels, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, D.F. Rassloff, C. Sauer, A. Schoening, H.-C. Schultz-Coulon, R. Stamen, P. Starovoitov, L. Vigani, M. Wessels, J. Zinsser [und 2903 weitere Personen]
Im Titel steht der zweite Buchstabe"b" mit einem Oberstrich
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Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.134.121801

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