Measurement of hard double-parton interactions in W(-> lv) plus 2-jet events at root s=7 TeV with the ATLAS detector

doi:10.1088/1367-2630/15/3/033038

Abstract:

The production of W bosons in association with two jets in proton-proton collisions at a centre-of-mass energy of root s = 7 TeV has been analysed for the presence of double-parton interactions using data corresponding to an integrated luminosity of 36 pb(-1), collected with the ATLAS detector at the Large Hadron Collider. The fraction of events arising from double-parton interactions, f(DP)((D)), has been measured through the p(T) balance between the two jets and amounts to f(DP)((D)) = 0.08 +/- 0.01 (stat.) +/- 0.02 (sys.) for jets with transverse momentum p(T) > 20 GeV and rapidity vertical bar y vertical bar < 2.8. This corresponds to a measurement of the effective area parameter for hard double-parton interactions of sigma(eff) = 15 +/- 3 (stat.)(-3)(+5) (sys.) mb.

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Measurement of hard double-parton interactions in W(-> lv) plus 2-jet events at root s=7 TeV with the ATLAS detector

Citations

Event generator tunes obtained from underlying event and multiparton scattering measurements

Observation and measurement of Higgs boson decays to WW$^*$ with the ATLAS detector

Study of double parton scattering using W + 2-jet events in proton-proton collisions at √s = 7 TeV

Constraining MPI models using σ eff and recent Tevatron and LHC Underlying Event data

Measurements of W ± Z production cross sections in pp collisions at √s = 8 TeV with the ATLAS detector and limits on anomalous gauge boson self-couplings

References

Geant4—a simulation toolkit

PYTHIA 6.4 Physics and Manual

New generation of parton distributions with uncertainties from global QCD analysis

A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX

Matching NLO QCD computations and parton shower simulations

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