The Chiral Extrapolation of Strange Matrix Elements in the Nucleon

Abstract

In current lattice simulations of nucleon properties, the up and down quark masses are significantly larger than their physical values, while the strange quark can be included in simulations with its physical mass. When the up and down quark masses are much smaller than the strange-quark mass the chiral extrapolation of strange-quark matrix elements in the nucleon from the lattice up and down quark masses to their physical values can be performed with two-flavor chiral perturbation theory, thereby avoiding the slow convergence problem of the three-flavor chiral expansion. We explore the chiral expansion of several matrix elements of strange operators in the nucleon in two-flavor chiral perturbation theory and two-flavor partial-quenched chiral perturbation theory.

11 pages, 1 figure

References in corpus (17)

• The Spin Structure of the Nucleon
• Partially quenched chiral perturbation theory without ${\Phi }_0$
• Chiral Corrections to Matrix Elements of Twist-2 Operators
• Baryons in Partially Quenched Chiral Perturbation Theory
• Is the Sullivan Process Compatible with QCD Chiral Dynamics?
• Leading Chiral Contributions to the Spin Structure of the Proton
• Effects of Quenching and Partial Quenching on Penguin Matrix Elements
• The Magnetic Moments of the Octet Baryons in Quenched Chiral Perturbation Theory
• Constructing Parton Convolution in Effective Field Theory
• Nucleon-Nucleon Interactions on the Lattice
• Hadronic Parity-Violation on the Lattice
• The strangeness content of the nucleon
• Heavy-Meson Observables at One-Loop in Partially Quenched Chiral Perturbation Theory
• Large-N_c Quark Distributions in the Delta and Chiral Logarithms in Quark Distributions of the Nucleon
• Physical Results from Partially Quenched Simulation
• Matrix Elements of Twist-2 Operators in Quenched Chiral Perturbation Theory
• Connecting the Quenched and Unquenched Worlds via the Large N_c World

Cited by in corpus (18)

• The Scalar Strange Content of the Nucleon from Lattice QCD
• Strangeness and charmness content of nucleon from overlap fermions on 2+1-flavor domain-wall fermion configurations
• Nucleon Masses and Magnetic Moments in a Finite Volume
• Strange quark contributions to nucleon mass and spin from lattice QCD
• The nucleon's strange electromagnetic and scalar matrix elements
• Twist-two matrix elements at finite and infinite volume
• Decuplet Baryon Masses in Partially Quenched Chiral Perturbation Theory
• Octet Baryon Masses in Partially Quenched Chiral Perturbation Theory
• Ginsparg-Wilson Pions Scattering in a Sea of Staggered Quarks
• Hyperons in Two Flavor Chiral Perturbation Theory
• Leading Chiral Corrections to the Nucleon Generalized Parton Distributions
• Nucleons Properties at Finite Lattice Spacing in Chiral Perturbation Theory
• Model Independent Results for SU(3) Violation in Light-Cone Distribution Functions
• Baryon Electromagnetic Properties in Partially Quenched Heavy Hadron Chiral Perturbation Theory
• Strangeness of the nucleon from Lattice Quantum Chromodynamics
• Baryon Masses in Partially Quenched Heavy Hadron Chiral Perturbation Theory
• Model-Independent Results for SU(3) Violation in Twist-3 Light-Cone Distribution Functions
• Topics in Effective Field Theory for Lattice QCD