Hadron Structure from Lattice QCD

Abstract

Recent progress in lattice QCD calculations of nucleon structure will be presented. Calculations of nucleon matrix elements and form factors have long been difficult to reconcile with experiment, but with advances in both methodology and computing resources, this situation is improving. Some calculations have produced agreement with experiment for key observables such as the axial charge and electromagnetic form factors, and the improved understanding of systematic errors will help to increase confidence in predictions of unmeasured quantities. The long-omitted disconnected contributions are now seeing considerable attention and some recent calculations of them will be discussed.

12 pages, 7 figures. Review talk presented at the XIth Quark Confinement and the Hadron Spectrum, September 8-12, 2014, Saint Petersburg, Russia

References in corpus (6)

• Big-Bang Nucleosynthesis
• Nucleon electromagnetic form factors from lattice QCD using a nearly physical pion mass
• Electromagnetic form factors of the nucleon: new fit and analysis of uncertainties
• The moment $⟨x{⟩}_{u-d}$ of the nucleon from $N_f=2$ lattice QCD down to nearly physical quark masses
• Flavor Twisted Boundary Conditions and Isovector Form Factors
• Finite Volume Effects on the Extraction of Form Factors at Zero Momentum

Cited by in corpus (10)

• A complete non-perturbative renormalization prescription for quasi-PDFs
• Nucleon isovector couplings from $N_f=2$ lattice QCD
• Global Effective-Field-Theory analysis of New-Physics effects in (semi)leptonic kaon decays
• Controlling Excited-State Contamination in Nucleon Matrix Elements
• Nucleon-pion-state contribution in lattice calculations of the nucleon charges $g_A,g_T$ and $g_S$
• On the effect of excited states in lattice calculations of the nucleon axial charge
• Nucleon matrix elements from lattice QCD with all-mode-averaging and a domain-decomposed solver: an exploratory study
• Multi-hadron-state contamination in nucleon observables from chiral perturbation theory
• Nucleon-pion-state contribution in lattice calculations of moments of parton distribution functions
• Nucleon form factors and couplings with $N_{\mathrm{f}}=2+1$ Wilson fermions