Chiral perturbation theory for nucleon generalized parton distributions

Abstract

We analyze the moments of the isosinglet generalized parton distributions H, E, (H) over tilde, (E) over tilde of the nucleon in one-loop order of heavy-baryon chiral perturbation theory. We discuss in detail the construction of the operators in the effective theory that are required to obtain all corrections to a given order in the chiral power counting. The results will serve to improve the extrapolation of lattice results to the chiral limit.