Measurement of $W$ boson angular distributions in events with high transverse momentum jets at $\sqrt{s}=$ 8 TeV using the ATLAS detector

Abstract

The $W$ boson angular distribution in events with high transverse momentum jets is measured using data collected by the ATLAS experiment from proton-proton collisions at a centre-of-mass energy $\sqrt{s}=$ 8 TeV at the Large Hadron Collider, corresponding to an integrated luminosity of 20.3 fb${}^{-1}$. The focus is on the contributions to $W$ + jets processes from real $W$ emission, which is achieved by studying events where a muon is observed close to a high transverse momentum jet. At small angular separations, these contributions are expected to be large. Various theoretical models of this process are compared to the data in terms of the absolute cross-section and the angular distributions of the muon from the leptonic $W$ decay.

38 pages in total, author list starting page 22, 5 figures, 6 tables, final version published in Phys. Lett. B. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2015-16/

References in corpus (53)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The anti-k_t jet clustering algorithm
• A Brief Introduction to PYTHIA 8.1
• Parton distributions for the LHC
• 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
• A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• ALPGEN, a generator for hard multiparton processes in hadronic collisions
• Matching NLO QCD computations and parton shower simulations
• The ATLAS Simulation Infrastructure
• New parton distribution functions from a global analysis of quantum chromodynamics
• Dispelling the N^3 myth for the Kt jet-finder
• Scattering Amplitudes with Open Loops
• A Positive-Weight Next-to-Leading-Order Monte Carlo for Heavy Flavour Hadroproduction
• Tuning Monte Carlo Generators: The Perugia Tunes
• Matching matrix elements and shower evolution for top-quark production in hadronic collisions
• Electroweak gauge boson production at hadron colliders through O(alpha_s^2)
• Parton distributions with QED corrections
• Topological cell clustering in the ATLAS calorimeters and its performance in LHC Run 1
• Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC
• Luminosity determination in pp collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector at the LHC
• Performance of $b$-Jet Identification in the ATLAS Experiment
• Jet energy measurement and its systematic uncertainty in proton-proton collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• Performance of the ATLAS Trigger System in 2010
• Z-boson production in association with a jet at next-to-next-to-leading order in perturbative QCD
• AMEGIC++ 1.0, A Matrix Element Generator In C++
• Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
• Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data
• $W$-boson production in association with a jet at next-to-next-to-leading order in perturbative QCD
• Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton-proton collision data
• Jet energy resolution in proton-proton collisions at sqrt(s) = 7 TeV recorded in 2010 with the ATLAS detector
• Automating dipole subtraction for QCD NLO calculations
• NLO QCD+EW predictions for V+jets including off-shell vector-boson decays and multijet merging
• Efficient Identification of Boosted Semileptonic Top Quarks at the LHC
• Measurements of the W production cross sections in association with jets with the ATLAS detector
• Improved iterative Bayesian unfolding
• W-boson plus jet differential distributions at NNLO in QCD
• Weak Boson Emission in Hadron Collider Processes
• Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
• Weak Gauge Boson Radiation in Parton Showers
• Differential cross section measurements for the production of a W boson in association with jets in proton-proton collisions at sqrt(s) = 7 TeV
• Performance of the ATLAS muon trigger in pp collisions at $\sqrt{s}=8$ TeV
• Standard Model Handles and Candles Working Group: Tools and Jets Summary Report
• Performance of the ATLAS Detector using First Collision Data
• Measuring collinear W emissions inside jets
• Monitoring and data quality assessment of the ATLAS liquid argon calorimeter
• A comparison of NNLO QCD predictions with 7 TeV ATLAS and CMS data for $V$+jet processes
• Jet vetoes versus giant K-factors in the exclusive Z+1-jet cross section
• Merging weak and QCD showers with matrix elements

Cited by in corpus (12)

• Jet Substructure at the Large Hadron Collider: A Review of Recent Advances in Theory and Machine Learning
• Right-handed charged currents in the era of the Large Hadron Collider
• Measurement of differential cross sections and $W^{+}/W^{-}$ cross-section ratios for $W$ boson production in association with jets at $\sqrt{s}=8$ TeV with the ATLAS detector
• Measurement of the differential cross sections for the associated production of a W boson and jets in proton-proton collisions at sqrt(s) = 13 TeV
• Collinear Electroweak Radiation in Antenna Parton Showers
• Implementation of Angularly Ordered Electroweak Parton Shower in Herwig 7
• Vector Bosons and Jets in Proton Collisions
• Electroweak, QCD and flavour physics studies with ATLAS data from Run 2 of the LHC
• Measurements of the differential cross sections of the production of Z + jets and $\gamma$ + jets and of Z boson emission collinear with a jet in pp collisions at $\sqrt{s}=$ 13 TeV
• Production of electroweak bosons in association with jets with the ATLAS detector
• Cross-section measurements for the production of a $W$-boson in association with high-transverse-momentum jets in $pp$ collisions at $\sqrt{s}$= 13 TeV with the ATLAS detector
• Production of vector bosons in association with jets in ATLAS