Study of double parton scattering using W + 2-jet events in proton-proton collisions at √s = 7 TeV

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doi:10.1007/JHEP03(2014)032

Double parton scattering is investigated in proton-proton collisions at √s = 7 TeV where the final state includes a W boson, which decays into a muon and a neutrino, and two jets. The data sample corresponds to an integrated luminosity of 5 fb-1, collected with the CMS detector at the LHC. Observables sensitive to double parton scattering are investigated after being corrected for detector effects and selection efficiencies. The fraction of W + 2-jet events due to double parton scattering is measured to be 0.055 ± 0.002 (stat.) ± 0.014 (syst.). The effective cross section, σ eff, characterizing the effective transverse area of hard partonic interactions in collisions between protons is measured to be 20.7 ± 0.8(stat.) ± 6.6(syst.)mb. © 2014 The Author(s)

Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2014). Study of double parton scattering using W + 2-jet events in proton-proton collisions at √s = 7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2014(3) [10.1007/JHEP03(2014)032].