Search for resonant production of strongly coupled dark matter in proton-proton collisions at 13 TeV

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dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAndrejkovic, J.W.
dc.contributor.authorBergauer, T.
dc.contributor.authorChatterjee, S.
dc.contributor.authorDamanakis, K.
dc.contributor.authorDragicevic, M.
dc.date.accessioned2025-03-23T19:16:32Z
dc.date.available2025-03-23T19:16:32Z
dc.date.issued2022
dc.departmentSinop Üniversitesi
dc.description.abstractThe first collider search for dark matter arising from a strongly coupled hidden sector is presented and uses a data sample corresponding to 138 fb−1, collected with the CMS detector at the CERN LHC, at s = 13 TeV. The hidden sector is hypothesized to couple to the standard model (SM) via a heavy leptophobic Z′ mediator produced as a resonance in proton-proton collisions. The mediator decay results in two “semivisible” jets, containing both visible matter and invisible dark matter. The final state therefore includes moderate missing energy aligned with one of the jets, a signature ignored by most dark matter searches. No structure in the dijet transverse mass spectra compatible with the signal is observed. Assuming the Z′ boson has a universal coupling of 0.25 to the SM quarks, an inclusive search, relevant to any model that exhibits this kinematic behavior, excludes mediator masses of 1.5–4.0 TeV at 95% confidence level, depending on the other signal model parameters. To enhance the sensitivity of the search for this particular class of hidden sector models, a boosted decision tree (BDT) is trained using jet substructure variables to distinguish between semivisible jets and SM jets from background processes. When the BDT is employed to identify each jet in the dijet system as semivisible, the mediator mass exclusion increases to 5.1 TeV, for wider ranges of the other signal model parameters. These limits exclude a wide range of strongly coupled hidden sector models for the first time. [Figure not available: see fulltext.] © 2022, The Author(s).
dc.description.sponsorshipHorizon 2020 Framework Programme, H2020, (884104, 675440)
dc.description.sponsorshipHorizon 2020 Framework Programme, H2020
dc.identifier.doi10.1007/JHEP06(2022)156
dc.identifier.issn1029-8479
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85133529159
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1007/JHEP06(2022)156
dc.identifier.urihttps://hdl.handle.net/11486/4119
dc.identifier.volume2022
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Science and Business Media Deutschland GmbH
dc.relation.ispartofJournal of High Energy Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_Scopus_20250323
dc.subjectBeyond Standard Model
dc.subjectDark Matter
dc.subjectHadron-Hadron Scattering
dc.titleSearch for resonant production of strongly coupled dark matter in proton-proton collisions at 13 TeV
dc.typeArticle

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