Radboud Repository

      View Item 
      •   Radboud Repository
      • Collections Radboud University
      • Datasets
      • View Item
      •   Radboud Repository
      • Collections Radboud University
      • Datasets
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      BrowseAll of RepositoryCollectionsDepartmentsDate IssuedAuthorsTitlesDocument typeThis CollectionDepartmentsDate IssuedAuthorsTitlesDocument type
      StatisticsView Item Statistics

      Study of hard double-parton scattering in four-jet events in pp collisions at √s = 7 TeV with the ATLAS experiment

      Find Full text
      Creators
      Aad, G.
      Caron, S.
      Colasurdo, L.
      Croft, V.
      Groot, N. de
      Filthaut, F.
      Galea, C.
      Igonkina, O.
      König, A.C
      Nektarijevic, S.
      Schouwenberg, J.F.P.
      Strubig, A.
      et al.
      Date of Archiving
      2016
      Archive
      HEPdata
      Related links
      https://hepdata.net/record/ins1479760
      DOI
      https://doi.orghttp://dx.doi.org/10.1007/JHEP11(2016)110
      Related publications
      Study of hard double-parton scattering in four-jet events in pp collisions at √s = 7 TeV with the ATLAS experiment  
      Publication type
      Dataset
      Access level
      Open access
      Please use this identifier to cite or link to this item: https://hdl.handle.net/2066/173073   https://hdl.handle.net/2066/173073
      Display more detailsDisplay less details
      Organization
      High Energy Physics
      Experimental High Energy Physics
      Audience(s)
      Physics
      Key words
      Hadron-Hadron scattering (experiments)
      Abstract
      Inclusive four-jet events produced in proton--proton collisions at a centre-of-mass energy of sqrt{s} = 7 TeV are analysed for the presence of hard double-parton scattering using data corresponding to an integrated luminosity of 37.3 pb^-1, collected with the ATLAS detector at the LHC. The contribution of hard double-parton scattering to the production of four-jet events is extracted using an artificial neural network, assuming that hard double-parton scattering can be approximated by an uncorrelated overlaying of dijet events. For events containing at least four jets with transverse momentum p_T > 20 GeV and pseudorapidity eta < 4.4, and at least one having p_T > 42.5 GeV, the contribution of hard double-parton scattering is estimated to be f_{DPS} = 0.092 ^{+0.005}_{-0.011} (stat.) ^{+0.033}_{-0.037} (syst.). After combining this measurement with those of the inclusive dijet and four-jet cross-sections in the appropriate phase space regions, the effective overlap area between the interacting protons, sigma_{eff}, was determined to be sigma_{eff} = 14.9 ^{+1.2}_{-1.0} (stat.) ^{+5.1}_{-3.8} (syst.) mb. This result is consistent within the quoted uncertainties with previous measurements of sigma_{eff}, performed at centre-of-mass energies between 63 GeV and 8 TeV using various final states, and it corresponds to 21^{+7}_{-6}% of the total inelastic cross-section measured at sqrt{s} = 7 TeV. The distributions of the observables sensitive to the contribution of hard double-parton scattering, corrected for detector effects, are also provided.
      This item appears in the following Collection(s)
      • Datasets [1399]
      • Faculty of Science [33774]
       
      •  Upload Full Text
      •  Terms of Use
      •  Notice and Takedown
      Bookmark and Share
      Admin login