6533b82efe1ef96bd12944af

RESEARCH PRODUCT

The E0 transition in pion photoproduction and radiative pion capture on 13C

C. BennholdL. Tiator

subject

PhysicsNuclear physicsNuclear and High Energy PhysicsPionMagnetic form factorRadiative transferSpace (mathematics)Wave function

description

Abstract The E0 contribution of the reactions 13 C( γ , π − ) 13 N g.s. as well as 13 C( π + , γ ) 13 N g.s. has been calculated in an extended shell-model space using a nonlocal DWIA framework. A realistic shell-model wave function that includes configurations from the (2s, 1d) as well as the (2p, 1f) shells has been employed for the A = 13 system and leads to a significant suppression of the E0 transition. The large suppression can be understood in terms of the E0 radial integrals over the relevant single-particle densities. A variety of angular distributions demonstrates the good overall agreement with experimental data.

https://doi.org/10.1016/0375-9474(90)90436-p