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|Title:||Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s = 8 TeV with the ATLAS detector|
|Other Titles:||Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at root s = 8 TeV with the ATLAS detector|
|Citation:||Physics Letters B, 2019; 790:595-614|
|M. Aaboud … A. Duvnjak … P. Jackson … J.L. Oliver … A. Petridis … A. Qureshi … A.S. Sharma … M.J. White … et al. [The ATLAS Collaboration]|
|Abstract:||The 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 √s = 8 TeV. In the four-lepton invariant-mass range of 80 < m₄l < 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 ƒDPS=0.042, which results in an estimated lower limit on the effective cross section at 95% confidence level of 1.0 mb|
|Keywords:||Four-lepton production; Double Drell–Yan; Double parton-scattering; Higgs golden decay channel|
|Rights:||©2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP³.|
|Appears in Collections:||Physics publications|
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