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

Atlas Collaboration

Research output: Contribution to journalArticlepeer-review

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 < m4` < 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.

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Nov 27 2018

ASJC Scopus subject areas

  • General

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