Measurement of distributions sensitive to the underlying event in inclusive Z-boson production in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector

Abstract

A measurement of charged-particle distributions sensitive to the properties of the underlying event is presented for an inclusive sample of events containing a Z-boson , decaying to an electron or muon pair. The measurement is based on data collected using the ATLAS detector at the LHC in proton-proton collisions at a centre-of-mass energy of 7 TeV with an integrated luminosity of $4.6$ fb${}^{-1}$. Distributions of the charged particle multiplicity and of the charged particle transverse momentum are measured in regions of azimuthal angle defined with respect to the Z-boson direction. The measured distributions are compared to similar distributions measured in jet events, and to the predictions of various Monte Carlo generators implementing different underlying event models.

arXiv comment34 pages plus author list + cover pages (51 pages total), 25 figures, 3 tables, submitted to European Physical Journal C, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2011-42/

References in corpus (39)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• Herwig++ Physics and Manual
• ALPGEN, a generator for hard multiparton processes in hadronic collisions
• Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC
• General-purpose event generators for LHC physics
• NLO vector-boson production matched with shower in POWHEG
• Parton Distributions for LO Generators
• Performance of the ATLAS Trigger System in 2010
• Interleaved Parton Showers and Tuning Prospects
• Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data
• Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton-proton collision data
• Colour reconnections in Herwig++
• Measurement of hard double-parton interactions in W->lv+ 2 jet events at sqrt(s)=7 TeV with the ATLAS detector
• HERWIG 6.4 Release Note
• HERWIG 6.1 Release Note
• HERWIG 6.3 Release Note
• Measurement of the production cross section of jets in association with a Z boson in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Measurement of underlying event characteristics using charged particles in pp collisions at $\sqrt{s}=900GeV$ and 7 TeV with the ATLAS detector
• Measurement of the production of a W boson in association with a charm quark in pp collisions at sqrt(s)=7 TeV with the ATLAS detector
• Measurement of the inclusive jet cross section in pp collisions at sqrt(s)=2.76 TeV and comparison to the inclusive jet cross section at sqrt(s)=7 TeV using the ATLAS detector
• The Underlying Event in Hard Interactions at the Tevatron pbarp Collider
• Readiness of the ATLAS Liquid Argon Calorimeter for LHC Collisions
• Studying the Underlying Event in Drell-Yan and High Transverse Momentum Jet Production at the Tevatron
• Transverse nucleon structure and diagnostics of hard parton-parton processes at LHC
• Measurement of the Underlying Event Activity in Proton-Proton Collisions at 0.9 TeV
• Measurement of the underlying event in the Drell-Yan process in proton-proton collisions at sqrt(s) = 7 TeV
• Underlying Event measurements in pp collisions at $\sqrt{s}$ = 0.9 and 7 TeV with the ALICE experiment at the LHC
• Measurements of underlying-event properties using neutral and charged particles in pp collisions at 900 GeV and 7 TeV with the ATLAS detector at the LHC
• Measurement of the underlying event in jet events from 7 TeV proton-proton collisions with the ATLAS detector
• Jets in multiparticle production in and beyond geometry of proton-proton collisions at the LHC
• HepData reloaded: reinventing the HEP data archive
• Hard underlying event correction to inclusive jet cross sections
• Underlying event characteristics and their dependence on jet size of charged-particle jet events in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Generation cuts and Born suppression in POWHEG

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