Uncertainties in determining parton distributions at large x
arXiv:1102.3686 · doi:10.1103/PhysRevD.84.014008
Abstract
We critically examine uncertainties in parton distribution functions (PDFs) at large x arising from nuclear effects in deuterium F2 structure function data. Within a global PDF analysis, we assess the impact on the PDFs from uncertainties in the deuteron wave function at short distances and nucleon off-shell effects, the use of relativistic kinematics, as well as the use of less a restrictive parametrization of the d/u ratio. We find that in particular the d-quark and gluon PDFs vary significantly with the choice of nuclear model. We highlight the impact of these uncertainties on the determination of the neutron structure function, and on W boson production and parton luminosity at the Tevatron and the LHC. Finally, we discuss prospects for new measurements sensitive to the d-quark and gluon distributions but insensitive to nuclear corrections.
37 pages, 13 figures. Final published version
References in corpus (9)
- Parton distributions for the LHC
- New parton distributions for collider physics
- A first unbiased global NLO determination of parton distributions and their uncertainties
- Dynamical parton distributions of the nucleon and very small-x physics
- Reweighting NNPDFs: the W lepton asymmetry
- Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV
- Empirical Fit to Inelastic Electron-Deuteron and Electron-Neutron Resonance Region Transverse Cross Sections
- Covariant spectator theory of np scattering: Effective range expansions and relativistic deuteron wave functions
- Neutron Structure Functions
Cited by in corpus (67)
- New parton distribution functions from a global analysis of quantum chromodynamics
- QCD and strongly coupled gauge theories: challenges and perspectives
- nCTEQ15 - Global analysis of nuclear parton distributions with uncertainties in the CTEQ framework
- Nucleon-Nucleon Correlations, Short-lived Excitations, and the Quarks Within
- Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab
- Constraints on large- parton distributions from new weak boson production and deep-inelastic scattering data
- Parton distributions and lattice QCD calculations: a community white paper
- Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction
- The high energy neutrino cross-section in the Standard Model and its uncertainty
- The Structure of the Proton in the LHC Precision Era
- Global parton distributions with nuclear and finite-Q^2 corrections
- Delineating parton distributions and the strong coupling
- Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
- The PDF4LHC report on PDFs and LHC data: Results from Run I and preparation for Run II
- A Critical Appraisal and Evaluation of Modern PDFs
- Parton Distributions in Nucleons and Nuclei
- New limits on intrinsic charm in the nucleon from global analysis of parton distributions
- Hadron structure in high-energy collisions
- The EMC Effect and High Momentum Nucleons in Nuclei
- Extended Parameterisations for MSTW PDFs and their effect on Lepton Charge Asymmetry from W Decays
- Measurement of the structure function of the nearly free neutron using spectator tagging in inelastic H(e, e'p)X scattering with CLAS
- Parton momentum and helicity distributions in the nucleon
- A detailed study of the nuclear dependence of the EMC effect and short-range correlations
- Measurement of the neutron F2 structure function via spectator tagging with CLAS
- Progress in understanding short-range structure in nuclei: an experimental perspective
- Impact of hadronic and nuclear corrections on global analysis of spin-dependent parton distributions
- Flavor Structure of the Nucleon Sea
- Nuclear Effects in the Deuteron and Constraints on the d/u Ratio
- Locally smeared operator product expansions in scalar field theory
- How well do we know the neutron structure function?
- Lattice corrections to the quark quasidistribution at one-loop
- Next-to leading order analysis of target mass corrections to structure functions and asymmetries
- Constrained gamma-Z interference corrections to parity-violating electron scattering
- Measurement of the EMC Effect in the Deuteron
- <x>_{u-d} from lattice QCD at nearly physical quark masses
- Measurement of the EMC effect in light and heavy nuclei
- Parton distributions in the presence of target mass corrections
- Iso-spin asymmetry of quark distributions and implications for single top-quark production at the LHC
- Impact of PDF uncertainties at large x on heavy boson production
- Measurements of the Separated Longitudinal Structure Function F_L from Hydrogen and Deuterium Targets at Low Q^2
- Constraints on the large-x d/u ratio from electron-nucleus scattering at x>1
- Comparative study of nuclear effects in polarized electron scattering from 3He
- Hadron mass corrections in semi-inclusive deep-inelastic scattering
- Nuclear effects in the proton-deuteron Drell-Yan process
- The role of the input scale in parton distribution analyses
- Final-state interactions in inclusive deep-inelastic scattering from the deuteron
- What did HERA teach us about the structure of the proton?
- The gluon and charm content of the deuteron
- On the Momentum Dependence of the Flavor Structure of the Nucleon Sea
- Do short-range correlations cause the nuclear EMC effect in the deuteron?
- Moments of the longitudinal proton structure function F_L from global data in the Q^2 range 0.75-45.0 (GeV/c)^2
- Direct observation of quark-hadron duality in the free neutron F_2 structure function
- Deep-inelastic and quasielastic electron scattering from nuclei
- Determination of neutron fracture functions from a global QCD analysis of leading neutron production at HERA
- Proton-PDF uncertainties in extracting nuclear PDFs from production in p+Pb collisions
- QCD analysis of structure functions in deep inelastic neutrino-nucleon scattering without using the orthogonal polynomials approach
- Short-range correlations and their implications for isospin-dependent modification of nuclear quark distributions
- Moments and power corrections of longitudinal and transverse proton structure functions from lattice QCD
- Large-x connections of nuclear and high-energy physics
- Probing Free Nucleons with (Anti)neutrinos
- Extraction of the neutron F2 structure function from inclusive proton and deuteron deep-inelastic scattering data
- Quasielastic electron-deuteron scattering in the weak binding approximation
- Deep-Inelastic Scattering at TeV Energies with LHC Muons
- Exploring Nucleon Structure with the Self-Organizing Maps Algorithm
- Physical Implications of the Extrapolation and Statistical Bootstrap of the Nucleon Structure Function Ratio for Mirror Nuclei He and H
- Proton structure at the LHC
- Why is GeV physics relevant in the age of the LHC?