Speaker
Mr
Viacheslav Tsaran
(JGU Mainz)
Description
The method of coherent $\pi^0$ photoproduction (
$\gamma$+ A${}_\text{g.s.}$ $\rightarrow$ $\pi^0$+ A${}_\text{g.s.}$, where A${}_\text{g.s.}$ is a nucleus in
its ground state) provides an efficient tool to study nucleon distribution and the neutron skin
of various nuclei. We investigate the case of nuclei with zero spin and isospin from the theoretical
point of view in the framework of a distorted wave impulse approximation in the momentum
space. For the pion-nucleus final-state interaction we employ a phenomenological pion-
nucleus optical potential which involves analysis of pion-pion elastic scattering as a solution
of the Lippmann-Schwinger integral equation. As a first application, we show results for the
${}^{12}$C nucleus, for which the harmonic oscillator shell model is used to develop a second-order
optical potential.
Primary authors
Prof.
Marc Vanderhaeghen
(Univ. Mainz)
Mr
Viacheslav Tsaran
(JGU Mainz)
