Add to ORKGThe extraction of hadron matrix elements in lattice QCD using the standard two- and three-point correlator functions demands careful attention to systematic uncertainties. One of the most commonly studied sources of systematic error is contamination from excited states. We apply the variational method to calculate the axial vector current $g_{A}$, the scalar current $g_{S}$ and the quark momentum fraction $\left<x\right>$ of the nucleon and we compare the results to the more commonly used summation and two-exponential fit methods. The results demonstrate that the variational approach offers a more efficient and robust method for the determination of nucleon matrix elements
The lattice formulation of Quantum ChromoDynamics (QCD) has become a reliable tool providing an ab i...
The aim of these lectures will be to provide an introductory overview of the concepts needed to comp...
QCD matrix elements of axial and vector currents between nucleons are required for the Monte Carlo r...
The extraction of hadron matrix elements in lattice QCD using the standard two- and three-point corr...
The extraction of hadron form factors in lattice QCD using the standard two- and three-point correla...
In order to understand how hadrons acquire their physical properties from their constituents, we mus...
In lattice QCD spectrum calculations, it is desirable to obtain multiple excited state energies in e...
I present results from the first lattice QCD calculations of axial-current matrix elements in light ...
Abstract. Precision measurements on nucleons provide constraints on the Standard Model and can also ...
We describe a procedure for extracting momentum derivatives of nucleon matrix elements on the lattic...
We describe a procedure for extracting momentum derivatives of nucleon matrix elements on the lattic...
We describe a procedure for extracting momentum derivatives of nucleon matrix elements on the lattic...
The authors report on a first preliminary evaluation of the axial current matrix element between sta...
We present the formalism necessary to reduce the errors due to the finiteness of the lattice spacing...
I give a brief introduction to the scope of lattice QCD calculations in our effort to extract the fu...
The lattice formulation of Quantum ChromoDynamics (QCD) has become a reliable tool providing an ab i...
The aim of these lectures will be to provide an introductory overview of the concepts needed to comp...
QCD matrix elements of axial and vector currents between nucleons are required for the Monte Carlo r...
The extraction of hadron matrix elements in lattice QCD using the standard two- and three-point corr...
The extraction of hadron form factors in lattice QCD using the standard two- and three-point correla...
In order to understand how hadrons acquire their physical properties from their constituents, we mus...
In lattice QCD spectrum calculations, it is desirable to obtain multiple excited state energies in e...
I present results from the first lattice QCD calculations of axial-current matrix elements in light ...
Abstract. Precision measurements on nucleons provide constraints on the Standard Model and can also ...
We describe a procedure for extracting momentum derivatives of nucleon matrix elements on the lattic...
We describe a procedure for extracting momentum derivatives of nucleon matrix elements on the lattic...
We describe a procedure for extracting momentum derivatives of nucleon matrix elements on the lattic...
The authors report on a first preliminary evaluation of the axial current matrix element between sta...
We present the formalism necessary to reduce the errors due to the finiteness of the lattice spacing...
I give a brief introduction to the scope of lattice QCD calculations in our effort to extract the fu...
The lattice formulation of Quantum ChromoDynamics (QCD) has become a reliable tool providing an ab i...
The aim of these lectures will be to provide an introductory overview of the concepts needed to comp...
QCD matrix elements of axial and vector currents between nucleons are required for the Monte Carlo r...