Çetin, Serkant Ali2021-01-222021-01-222019-03-101873-24450370-2693https://hdl.handle.net/11411/3156https://doi.org/10.1016/j.physletb.2019.01.062The inclusive production of four isolated charged leptons in pp collisions is analysed for the presence of hard double-parton scattering, using 20.2 fb(-1) of data recorded in the ATLAS detector at the LHC at centre-of-mass energy root s = 8 TeV. In the four-lepton invariant-mass range of 80 < m(4l) < 1000 GeV, an artificial neural network is used to enhance the separation between single- and double-parton scattering based on the kinematics of the four leptons in the final state. An upper limit on the fraction of events originating from double-parton scattering is determined at 95% confidence level to be f(DPS) = 0.042, which results in an estimated lower limit on the effective cross section at 95% confidence level of 1.0 mb. (C) 2019 The Author(s). Published by Elsevier B.V.eninfo:eu-repo/semantics/openAccessFour-lepton productionDouble Drell-YanDouble parton-scatteringHiggs golden decay channelArticle2-s2.0-8506142941910.1016/j.physletb.2019.01.062Q1WOS:000460118200077