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Explicit expressions for pion correlators are derived in position-space,employing Chiral Perturbation Theory (ChPT). Resonance exchange contributionsare included to test the range of applicability of the leading-order ChPTexpressions. The obtained results will be useful for a forthcoming Lattice-QCDstudy of double parton distributions in the pion.

Pion correlation functions in position space from chiral perturbation theory with resonance exchange