Title Interplay of dynamical and structure effects in the observables for 12C(p,2p) near 400 MeV with polarized and unpolarized beams /
Authors Mecca, A ; Cravo, E ; Deltuva, Arnoldas ; Crespo, R ; Cowley, A. A ; Arriaga, A ; Wiringa, R. B ; Noro, T
DOI 10.1016/j.physletb.2019.134989
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Is Part of Physics letters B.. Amsterdam : Elsevier B.V.. 2019, vol. 798, art. no. 134989, p. [1-6].. ISSN 0370-2693. eISSN 1873-2445
Keywords [eng] (p, pN) reactions ; few-body reaction ; many-body ab initio structure ; polarization
Abstract [eng] We investigate the interplay of reaction mechanism and structure effects in the calculated cross sections and polarization observables for the direct C12(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.
Published Amsterdam : Elsevier B.V
Type Journal article
Language English
Publication date 2019