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Search for new phenomena in events with two opposite-charge leptons, jets and missing transverse momentum in pp collisions at root s=13 TeV with the ATLAS detector

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  • نوع التسجيلة:
    Electronic Resource
  • الدخول الالكتروني :
    http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-194147
    Journal of High Energy Physics (JHEP), 1126-6708, 2021, 4
  • معلومة اضافية
    • Publisher Information:
      Stockholms universitet, Fysikum Stockholms universitet, Oskar Klein-centrum för kosmopartikelfysik (OKC) 2021
    • Added Details:
      Andrean, Stefio Y.
      Backman, Filip
      Barranco Navarro, Laura
      Bohm, Christian
      Clement, Christophe
      Hellman, Sten
      Kastanas, Alexandros
      Lou, Xuanhong
      Milstead, David A.
      Moa, Torbjörn
      Nelson, Michael E.
      Pasuwan, Patrawan
      Pereira Sanchez, Laura
      Shaikh, Nabila W.
      Silverstein, Samuel B.
      Sjölin, Jörgen
      Strandberg, Sara
      Strübig, Antonia
      Valdés Santurio, Eduardo
      Wallängen, Veronica
    • نبذة مختصرة :
      The results of a search for direct pair production of top squarks and for dark matter in events with two opposite-charge leptons (electrons or muons), jets and missing transverse momentum are reported, using 139 fb(-1) of integrated luminosity from proton-proton collisions at root s = 13 TeV, collected by the ATLAS detector at the Large Hadron Collider during Run 2 (2015-2018). This search considers the pair production of top squarks and is sensitive across a wide range of mass differences between the top squark and the lightest neutralino. Additionally, spin-0 mediator dark-matter models are considered, in which the mediator is produced in association with a pair of top quarks. The mediator subsequently decays to a pair of dark-matter particles. No significant excess of events is observed above the Standard Model background, and limits are set at 95% confidence level. The results exclude top squark masses up to about 1 TeV, and masses of the lightest neutralino up to about 500 GeV. Limits on dark-matter production are set for scalar (pseudoscalar) mediator masses up to about 250 (300) GeV.
    • الموضوع:
      Hadron-Hadron scattering (experiments); Physical Sciences; Fysik; Article in journal; info:eu-repo/semantics/article; text
    • الرقم المعرف:
      10.1007.JHEP04(2021)165
    • Note:
      English
    • Other Numbers:
      UPE oai:DiVA.org:su-194147
      0000-0002-9766-2670
      0000-0002-3380-8167
      0000-0003-3122-3605
      0000-0002-5415-1600
      0000-0001-6945-1916
      0000-0002-8309-5548
      0000-0002-7644-5984
      0000-0002-0183-327X
      0000-0003-2987-2964
      0000-0001-7913-3313
      0000-0001-9358-3505
      0000-0001-7734-7617
      0000-0002-5285-8995
      0000-0001-7253-7497
      0000-0001-9931-2896
      doi:10.1007/JHEP04(2021)165
      ISI:000642153100001
      1269457719
    • Contributing Source:
      UPPSALA UNIV LIBR
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.on1269457719
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