Microscopic approach to pion-nucleus dynamics

Details Microscopic approach to pion-nucleus dynamics Microscopic approach to pion-nucleus dynamics

1992-12-17

arxiv.org/abs/nucl-th/9212013v1

Physics

Nuclear Physics

Nuclear Theory

13 pages

Scientific paper

10.1103/PhysRevC.47.R9

Elastic scattering of pions from finite nuclei is investigated utilizing a contemporary, momentum--space first--order optical potential combined with microscopic estimates of second--order corrections. The calculation of the first--order potential includes:\ \ (1)~full Fermi--averaging integration including both the delta propagation and the intrinsic nonlocalities in the $\pi$-$N$ amplitude, (2)~fully covariant kinematics, (3)~use of invariant amplitudes which do not contain kinematic singularities, and (4)~a finite--range off--shell pion--nucleon model which contains the nucleon pole term. The effect of the delta--nucleus interaction is included via the mean spectral--energy approximation. It is demonstrated that this produces a convergent perturbation theory in which the Pauli corrections (here treated as a second--order term) cancel remarkably against the pion true absorption terms. Parameter--free results, including the delta--nucleus shell--model potential, Pauli corrections, pion true absorption, and short--range correlations are presented. (2 figures available from authors)

Affiliated with

Also associated with

No associations

Rating

Microscopic approach to pion-nucleus dynamics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Microscopic approach to pion-nucleus dynamics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microscopic approach to pion-nucleus dynamics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-470666