An NLO QCD analysis of inclusive cross-section and jet-production data from the ZEUS experiment

Abstract

The ZEUS inclusive differential cross-section data from HERA, for charged and neutral current processes taken with e+ and e- beams, together with differential cross-section data on inclusive jet production in e+ p scattering and dijet production in γp scattering, have been used in a new NLO QCD analysis to extract the parton distribution functions of the proton. The input of jet data constrains the gluon and allows an accurate extraction of α_s(M_Z) at NLO; α_s(M_Z) = 0.1183 \pm 0.0028(exp.) \pm 0.0008(model) An additional uncertainty from the choice of scales is estimated as \pm 0.005. This is the first extraction of α_s(M_Z) from HERA data alone.

37 pages, 14 figures, to be submitted to EPJC. PDFs available at http://durpdg.dur.ac.uk/hepdata in LHAPDFv4

References in corpus (12)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Uncertainties of predictions from parton distributions. I: experimental errors
• Measurement and QCD Analysis of Neutral and Charged Current Cross Sections at HERA
• A ZEUS next-to-leading-order QCD analysis of data on deep inelastic scattering
• Inclusive jet cross sections in the Breit frame in neutral current deep inelastic scattering at HERA and determination of alpha_s
• High-Q^2 neutral current cross sections in e^+p deep inelastic scattering at sqrt{s}=318 GeV
• Measurement of high-Q^2 e^-p neutral current cross sections at HERA and the extraction of xF_3
• Measurement of subjet multiplicities in neutral current deep inelastic scattering at HERA and determination of ${\alpha }_s$
• Substructure dependence of jet cross sections at HERA and determination of alphas
• A New 5 Flavour NLO Analysis and Parametrizations of Parton Distributions of the Real Photon
• Scaling violations and determination of alpha_s from jet production in gamma-p interactions at HERA
• Jet production in charged current deep inelastic e+p scattering at HERA

Cited by in corpus (66)

• Parton distributions for the LHC
• The ATLAS Simulation Infrastructure
• Implications of CTEQ global analysis for collider observables
• Combined Measurement and QCD Analysis of the Inclusive ep Scattering Cross Sections at HERA
• Uncertainties on alpha_S in global PDF analyses and implications for predicted hadronic cross sections
• Hard Interactions of Quarks and Gluons: a Primer for LHC Physics
• A posteriori inclusion of parton density functions in NLO QCD final-state calculations at hadron colliders: The APPLGRID Project
• The 3-, 4-, and 5-flavor NNLO Parton from Deep-Inelastic-Scattering Data and at Hadron Colliders
• A determination of parton distributions with faithful uncertainty estimation
• Dijet Cross Sections and Parton Densities in Diffractive DIS at HERA
• Measurement of inclusive jet and dijet production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• 50 Years of Quantum Chromodynamics
• Leading proton production in deep inelastic scattering at HERA
• Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector
• Tsallis Fits to pT Spectra and Multiple Hard Scattering in pp Collisions at the LHC
• From QCD-based hard-scattering to nonextensive statistical mechanical descriptions of transverse momentum spectra in high-energy $pp$ and $p\bar{p}$ collisions
• The longitudinal cross section of vector meson electroproduction
• 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
• Deep Inelastic Electron-Nucleon Scattering at the LHC
• Measurement of the Longitudinal Proton Structure Function at HERA
• The Hadronic Final State at HERA
• Inclusive-jet and dijet cross sections in deep inelastic scattering at HERA
• A QCD analysis of ZEUS diffractive data
• Collider Physics at HERA
• Inclusive-jet photoproduction at HERA and determination of alphas
• Structure Functions
• Measurement of high-Q^2 neutral current deep inelastic e^- p scattering cross sections with a longitudinally polarised electron beam at HERA
• Measurement of high-Q^2 charged current deep inelastic scattering cross sections with a longitudinally polarised positron beam at HERA
• Measurement of charged current deep inelastic scattering cross sections with a longitudinally polarised electron beam at HERA
• The Quark and Gluon Structure of the Proton
• Measurement of the differential cross section for the production of an isolated photon with associated jet in ppbar collisions at sqrt(s)=1.96 TeV
• Collider Inclusive Jet Data and the Gluon Distribution
• Status and Prospects of Top-Quark Physics
• Coherent photoproduction of $J/\psi$ in nucleus-nucleus collisions in the color dipole approach
• Improved formulation of global QCD analysis with zero-mass hard cross sections
• Photoproduction of Dijets with High Transverse Momenta at HERA
• New parton distributions in fixed flavour factorization scheme from recent deep-inelastic-scattering data
• A POWHEG generator for deep inelastic scattering
• Dipole model analysis of highest precision HERA data, including very low $Q^2$'s
• Measurement of high-Q2 neutral current deep inelastic e+p scattering cross sections with a longitudinally polarised positron beam at HERA
• What did HERA teach us about the structure of the proton?
• Parton Distribution Uncertainties using Smoothness Prior
• Incoherent diffractive photoproduction of $J/\psi$ and ${\rm Y}$ on heavy nuclei in the color dipole approach
• Measurement of high-Q^2 deep inelastic scattering cross sections with a longitudinally polarised positron beam at HERA
• High-E_T dijet photoproduction at HERA
• High Energy Photoproduction
• New avenue to the Parton Distribution Functions: Self-Organizing Maps
• Multi-jet cross sections in charged current e+-p scattering at HERA
• Determination of the strong coupling constant from inclusive jet cross section data from multiple experiments
• Measurement of neutral current cross sections at high Bjorken-x with the ZEUS detector at HERA
• Markov Chain Monte Carlo technics applied to Parton Distribution Functions determination: proof of concept
• Measurement of groomed event shape observables in deep-inelastic electron-proton scattering at HERA
• Three- and Four-jet Production at Low x at HERA
• The uncertainty of parton distribution functions due to physical observables in a global analysis
• Proton Structure Measurements and the HERAPDF fit
• The impact of the LHCb $B^{\pm }$ production cross-section on parton distribution functions and determining the mass of heavy quarks
• Gluon Polarization In Nucleon
• DISPred - a program to calculate deep inelastic scattering cross sections
• Combined HERA Deep Inelastic Scattering Data and NLO QCD Fits
• Electroweak results from HERA
• High-pT photon processes and the photon structure - results from HERA jet and prompt photon (photo)production
• Search for Ultra High-Energy Neutrinos with AMANDA-II
• Measurement of the Structure of the Proton at HERA
• Quantum Chromodynamics at Colliders
• Measurements of inclusive jet and dijet cross sections at the Large Hadron Collider
• QCD Physics with ZEUS and H1 at HERA