2+1 flavor QCD calculation of <x> and <x^2>

TL;DR

This paper computes the first moments of nucleon structure functions using 2+1 flavor lattice QCD with dynamical fermions, employing the sequential source technique to analyze different momentum transfers.

Contribution

It introduces a calculation of nucleon moments using 2+1 flavor dynamical clover fermions with a novel application of the sequential source technique for various momenta.

Findings

First moments of unpolarized structure functions obtained.

Method demonstrates effective use of sequential source technique.

Results contribute to understanding nucleon internal structure.

Abstract

We calculate the connected insertions of the nucleon three-point function to study the first few moments of the unpolarized structure functions of the nucleon. (The disconnected insertions are discussed elsewhere in these proceedings). The calculation employs the CP-PACS/JLQCD 2+1 dynamical clover fermions on a 16^3x32 lattice with lattice spacing a=0.1219 fm. The sequential source technique, using non-zero and zero momentum point nucleon field as the secondary source, is applied enabling a study of different currents at various momentum transfer.