Pion photoproduction and scattering by nucleons: T invariance and the δ33 isomultiplet characteristics

Multipole analysis of the #betta#p → Nπ reaction is conducted using the regularization method, in which the values of the Msub(1+)sup((3)) amplitude phase and module are specified. A new evaluation of T-invariance correctness boundary of hadron electromagnetic interactions is obtained on the base of the determined magnitudes. Characteristics of the δ33-isomultiplet: pole characteristics of the δ33+-isobar (pole coordinates and subtraction relatively to the Msub(1+)sup((33)) amplitude pole) and evaluations of the δ33-isomultiplet mass splitting are obtained