Interplay of dynamical and structure effects in the observables for 12C(p,2p) near 400 MeV with polarized and unpolarized beams
Date
2019-10-01
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
We investigate the interplay of reaction mechanism and structure effects in the calculated cross sections and polarization observables for the direct 12C(p, 2p)reaction near 400 MeV around the Quasi Free Scattering (QFS) kinematical condition. We do the first consistent comparison between the scattering observables obtained from solutions of three-body Faddeev/Alt-Grassberger-Sandhas (F/AGS) equations and from the Distorted-Wave Impulse Approximation (DWIA). We explore structure effects on the calculated observables, making use of one-nucleon spectroscopic overlaps obtained from the quantum Monte Carlo (QMC) many-body wave functions and using a Woods-Saxon parametrization with parameters adjusted to experimental (p, 2p) data. We show, for the first time, that the two reaction formalisms exhibit a distinct behavior depending upon the kinematic conditions. We also show that the agreement between the experimental data and the theoretical results depends on the reaction formalism, kinematical conditions and optical model parametrizations in addition to the spectroscopic factors (SFs). The agreement between the data and predictions using QMC wave functions diminishes prominently for transitions to excited states of 11B.
Description
CITATION: Mecca, A. et al. 2019. Interplay of dynamical and structure effects in the observables for 12C(p,2p) near 400 MeV with polarized and unpolarized beams. Physics Letters B, 798. doi:10.1016/j.physletb.2019.134989
The original publication is available at https://www.sciencedirect.com/journal/physics-letters-b
The original publication is available at https://www.sciencedirect.com/journal/physics-letters-b
Keywords
Many-body problem, Few-body problem, (p, pN) reactions, Polarized beams (Nuclear physics), Parametric vibration, Proton beams, Polarization spectroscopy
Citation
Mecca, A. et al. 2019. Interplay of dynamical and structure effects in the observables for 12C(p,2p) near 400 MeV with polarized and unpolarized beams. Physics Letters B, 798. doi:10.1016/j.physletb.2019.134989