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Search for quantum black hole production in lepton plus jet final states using proton-proton collisions at √s=13 TeV with the ATLAS detector

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Detalhes bibliográficos
Resumo:A search for quantum black holes in electron+jet and muon+jet invariant mass spectra is performed with 140\thinspace\thinspace fb\(^{-1}\) of data collected by the ATLAS detector in proton-proton collisions at \(\sqrt{s} = 13\thinspace\thinspace \text{TeV}\) at the Large Hadron Collider. The observed invariant mass spectrum of lepton+jet pairs is consistent with Standard Model expectations. Upper limits are set at 95\% confidence level on the production cross section times branching fractions for quantum black holes decaying into a lepton and a quark in a search region with invariant mass above 2.0 TeV. The resulting quantum black hole lower mass threshold limit is 9.2 TeV in the Arkani-Hamed-Dimopoulos-Dvali model, and 6.8 TeV in the Randall-Sundrum model.
Autores principais:Castro, Nuno Filipe
Outros Autores:Onofre, A.; ATLAS Collaboration
Assunto:Ciências Naturais::Ciências Físicas
Ano:2024
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho
Descrição
Resumo:A search for quantum black holes in electron+jet and muon+jet invariant mass spectra is performed with 140\thinspace\thinspace fb\(^{-1}\) of data collected by the ATLAS detector in proton-proton collisions at \(\sqrt{s} = 13\thinspace\thinspace \text{TeV}\) at the Large Hadron Collider. The observed invariant mass spectrum of lepton+jet pairs is consistent with Standard Model expectations. Upper limits are set at 95\% confidence level on the production cross section times branching fractions for quantum black holes decaying into a lepton and a quark in a search region with invariant mass above 2.0 TeV. The resulting quantum black hole lower mass threshold limit is 9.2 TeV in the Arkani-Hamed-Dimopoulos-Dvali model, and 6.8 TeV in the Randall-Sundrum model.