Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector

The ATLAS collaboration

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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 fDPS=0.042, which results in an estimated lower limit on the effective cross section at 95% confidence level of 1.0 mb.

元の言語英語
ページ(範囲)595-614
ページ数20
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
790
DOI
出版物ステータス出版済み - 1 1 2019

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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