Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector
- Link:
- Erscheinungsjahr:
- 2019
- Medientyp:
- Text
- Schlagworte:
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- Double Drell–Yan
- Double parton-scattering
- Four-lepton production
- Higgs golden decay channel
- Beschreibung:
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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<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.
- Lizenz:
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- info:eu-repo/semantics/openAccess
- Quellsystem:
- Forschungsinformationssystem der UHH
Interne Metadaten
- Quelldatensatz
- oai:www.edit.fis.uni-hamburg.de:publications/87d55a60-02c5-4617-bed5-9303d7dfd67c