Analysis of the low-energy theorem for γp → pπ 0

The derivation of the 'classical' low-energy theorem (LET) forγp→pπ0 is re-examined and compared to chiral perturbation theory. Both results are correct and are not contradictory; they differ because different expansions of the same quantity are involved. Possible modifications of the extended partially conserved axial-vector current relation, one of the starting points in the derivation of the LET, are discussed. An alternate, more transparent form of the LET is presented