A search for top-squark pair production, in final states containing a top quark, a charm quark and missing transverse momentum, using the 139 fb−1 of pp collision data collected by the ATLAS detector

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dc.article.number250
dc.catalogadoryvc
dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbicht, N. J.
dc.contributor.authorAbidi, S. H.
dc.contributor.authorAboulhorma, A.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorAcharya, B. S.
dc.contributor.authorBourdarios, A.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAddepalli, S. V.
dc.contributor.authorAddison, M. J.
dc.contributor.authorAdelman, J.
dc.contributor.authorAdiguzel, A.
dc.contributor.authorAdye, T.
dc.contributor.authorDíaz, Marco A.
dc.contributor.authorGaray Walls, Francisca
dc.contributor.authorUrrejola Pereira, Pedro Salvador
dc.contributor.otherATLAS Collaboration
dc.date.accessioned2024-08-06T22:25:45Z
dc.date.available2024-08-06T22:25:45Z
dc.date.issued2024
dc.date.updated2024-08-04T00:05:09Z
dc.description.abstractAbstract: This paper presents a search for top-squark pair production in fnal states with a top quark, a charm quark and missing transverse momentum. The data were collected with the ATLAS detector during LHC Run 2 and correspond to an integrated luminosity of 139 fb−1 of proton-proton collisions at a centre-of-mass energy of √s = 13 TeV. The analysis is motivated by an extended Minimal Supersymmetric Standard Model featuring a non-minimal favour violation in the second- and third-generation squark sector. The top squark in this model has two possible decay modes, either t˜1 → cχ˜01 or t˜1 → tχ˜01, where the χ˜01 is undetected. The analysis is optimised assuming that both of the decay modes are equally probable, leading to the most likely fnal state of tc + Emiss T. Good agreement is found between the Standard Model expectation and the data in the search regions. Exclusion limits at 95% CL are obtained in the m(t˜1) vs. m(χ˜01) plane and, in addition, limits on the branching ratio of the t˜1 → tχ˜0 1 decay as a function of m(t˜1) are also produced. Top-squark masses of up to 800 GeV are excluded for scenarios with light neutralinos, and top-squark masses up to 600 GeV are excluded in scenarios where the neutralino and the top squark are almost mass degenerate.
dc.fechaingreso.objetodigital2024-08-06
dc.format.extent49 páginas
dc.fuente.origenBiomed Central
dc.identifier.citationJournal of High Energy Physics. 2024 Jul 26;2024(7):250
dc.identifier.doi10.1007/JHEP07(2024)250
dc.identifier.urihttps://doi.org/10.1007/JHEP07(2024)250
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/87308
dc.information.autorucInstituto de Física; Diaz Gutierrez Marco Aurelio; S/I; 104746
dc.information.autorucInstituto de Física; Garay Walls, Francisca; 0000-0002-6670-1104; 131813
dc.information.autorucInstituto de Física; Urrejola Pereira, Pedro Salvador; 0000-0001-8309-2227; 121214
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistaJournal of High Energy Physics
dc.rightsacceso abierto
dc.rights.holderThe Author(s)
dc.rights.licenseCC BY Atribución Internacional 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBeyond Standard Model
dc.subjectHadron-Hadron Scattering
dc.subjectSupersymmetry
dc.subject.ddc510
dc.subject.deweyMatemática física y químicaes_ES
dc.titleA search for top-squark pair production, in final states containing a top quark, a charm quark and missing transverse momentum, using the 139 fb−1 of pp collision data collected by the ATLAS detector
dc.typeartículo
dc.volumen2024
sipa.codpersvinculados104746
sipa.codpersvinculados131813
sipa.codpersvinculados121214
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