Generalised parton distributions of the pion in partially-quenched chiral perturbation theory

Details Generalised parton distributions of the pion in partially-quenched chiral perturbation theory Generalised parton distributions of the pion in partially-quenched chiral perturbation theory

2006-12-21

arxiv.org/abs/hep-lat/0612027v1

Phys.Rev.D75:074003,2007

Physics

High Energy Physics

High Energy Physics - Lattice

15 pages

Scientific paper

10.1103/PhysRevD.75.074003

We consider the pion matrix elements of the isoscalar and isovector combinations of the vector and tensor twist-two operators that determine the moments of the various pion generalised parton distributions. Our analysis is performed using partially-quenched chiral perturbation theory. We work in the SU(2) and SU(4|2) theories and present our results at infinite volume and also at finite volume where some subtleties arise. These results are useful for extrapolations of lattice calculations of these matrix elements at small momentum transfer to the physical regime.

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