Measurement of the cross-section for W boson production in association with b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

Abstract

This paper reports a measurement of the W+b-jets production cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. These results are based on data corresponding to an integrated luminosity of 4.6 fb-1, collected with the ATLAS detector. Cross-sections are presented as a function of jet multiplicity and of the transverse momentum of the leading b-jet for both the muon and electron decay modes of the W boson. The W+b-jets cross-section, corrected for all known detector effects, is quoted in a limited kinematic range, using jets reconstructed with the anti-k_t clustering algorithm with transverse momentum above 25 GeV and rapidity within +/- 2.1. Combining the muon and electron channels, the fiducial cross-section for W+b-jets is measured to be 7.1 +/- 0.5 (stat) +/- 1.4 (syst) pb, consistent with next-to-leading order QCD calculations within 1.5 standard deviations.

31 pages plus author list (53 pages total), 9 figures, 10 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2012-11/

References in corpus (13)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• PYTHIA 6.4 Physics and Manual
• Vector boson pair production at the LHC
• -- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
• MCFM for the Tevatron and the LHC
• Electroweak gauge boson production at hadron colliders through O(alpha_s^2)
• Improved luminosity determination in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector at the LHC
• Parton Distributions for LO Generators
• Measurement of hard double-parton interactions in W->lv+ 2 jet events at sqrt(s)=7 TeV with the ATLAS detector
• Improved iterative Bayesian unfolding
• QCD corrections to the hadronic production of a heavy quark pair and a W-boson including decay correlations
• Associated Production of a W Boson and One b Jet
• Measurement of the ppbar -> W+b+X production cross section at \sqrt{s}=1.96 TeV

Cited by in corpus (40)

• Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
• Search for the standard model Higgs boson produced in association with a W or a Z boson and decaying to bottom quarks
• Measurements of Higgs boson properties in the diphoton decay channel with 36 fb${}^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in sqrt{s}=8 TeV pp collisions with the ATLAS detector
• Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in $\sqrt{s}=$ 8 TeV pp collisions with the ATLAS detector
• The PDF4LHC report on PDFs and LHC data: Results from Run I and preparation for Run II
• Search For Higgs Boson Pair Production in the $\gamma \gamma b\bar{b}$ Final State using $pp$ Collision Data at $\sqrt{s}=8$ TeV from the ATLAS Detector
• Search for direct pair production of the top squark in all-hadronic final states in proton-proton collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Search for $H\to \gamma \gamma$ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector
• Search for supersymmetry in pp collisions at sqrt(s) = 8 TeV in events with a single lepton, large jet multiplicity, and multiple b jets
• Search for Higgs boson pair production in the $\gamma \gamma b\bar{b}$ final state with 13 TeV $pp$ collision data collected by the ATLAS experiment
• Search for top squarks in final states with one isolated lepton, jets, and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Reinterpretation of LHC Results for New Physics: Status and Recommendations after Run 2
• MCPLOTS: a particle physics resource based on volunteer computing
• Measurement of the production cross section for a W boson and two b jets in pp collisions at sqrt(s) = 7 TeV
• 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
• Study of $W$ boson production in association with beauty and charm
• Associated production of a $W$ boson and massive bottom quarks at next-to-next-to-leading order in QCD
• Testing new physics models with global comparisons to collider measurements: the Contur toolkit
• Search for large missing transverse momentum in association with one top-quark in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Disentangling Heavy Flavor at Colliders
• Combination of searches for Higgs boson pair production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for flavour-changing neutral currents in processes with one top quark and a photon using 81 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS experiment
• Measurement of the production cross section of a W boson in association with two b jets in pp collisions at sqrt(s) = 8 TeV
• Search for intrinsic charm in vector boson production accompanied by heavy flavor jets
• NLO QCD Predictions for $Wb\bar{b}$ Production in Association with up to Three Light Jets at the LHC
• Measurement of the inclusive and fiducial $t\bar{t}$ production cross-sections in the lepton+jets channel in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Measurement of forward $t\overline{t}$, $W+b\overline{b}$ and $W+c\overline{c}$ production in $pp$ collisions at $\sqrt{s}=8$ TeV
• Wbbj production at NLO with POWHEG+MiNLO
• Properties of $g\to b\bar{b}$ at small opening angles in $pp$ collisions with the ATLAS detector at $\sqrt{s}=13$ TeV
• Search for the non-resonant production of Higgs boson pairs via gluon fusion and vector-boson fusion in the $b\bar{b}{\tau }^{+}{\tau }^{-}$ final state in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Production of electroweak bosons at hadron colliders: theoretical aspects
• Vector Bosons and Jets in Proton Collisions
• Hard-photon production with b jets at hadron colliders
• Review of single vector boson production in pp collisions at $\sqrt{s}=7$ TeV
• Investigating the Quantum Properties of Jets and the Search for a Supersymmetric Top Quark Partner with the ATLAS Detector
• Quark-gluon plasma phenomenology from the lattice
• Study of Higgs boson pair production in the $HH\to b\overline{b}\gamma \gamma$ final state with 308 fb${}^{-1}$ of data collected at $\sqrt{s}=$ 13 TeV and 13.6 TeV by the ATLAS experiment
• Quark-Gluon Plasma: from lattice simulations to experimental results
• Heavy quark jets at the LHC