Reduced sensitivity of the $(d,p)$ cross sections to the deuteron model beyond adiabatic approximation

Abstract

It has recently been reported [Phys. Rev. Lett. 117, 162502 (2016)] that (d, p) cross sections can be very sensitive to the n-p interactions used in the adiabatic treatment of deuteron breakup with nonlocal nucleon-target optical potentials. To understand to what extent this sensitivity could originate in the inaccuracy of the adiabatic approximation we have developed a leading-order local- equivalent continuum-discretized coupled-channel model that accounts for non-adiabatic effects in the presence of nonlocality of nucleon optical potentials. We have applied our model to the astro- physically relevant reaction ${}^{26m}$Al$(d,p{)}^{27}$Al using two different n-p potentials associated with the lowest and the highest n-p kinetic energy in the short-range region of their interaction, respectively. Our calculations reveal a significant reduction of the sensitivity to the high n-p momenta thus confirming that it is mostly associated with theoretical uncertainties of the adiabatic approximation itself. The non-adiabatic effects in the presence of nonlocality were found to be stronger than those in the case of the local optical potentials. These results argue for extending the analysis of the $(d,p)$ reactions, measured for spectroscopic studies, beyond the adiabatic approximation.

6 pages, 3 figures

References in corpus (6)

• Precision nucleon-nucleon potential at fifth order in the chiral expansion
• Explicit inclusion of nonlocality in (d,p) transfer reactions
• Sensitivity of (d,p) reactions to high n-p momenta and the consequences for nuclear spectroscopy studies
• Examining the effect of nonlocality in $(d,n)$ transfer reactions
• Nonlocal nucleon-nucleus interactions in (d,p) reactions: Role of the deuteron D-state
• Examination of the adiabatic approximation for $(d,p)$ reactions

Cited by in corpus (9)

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• Weak sensitivity of three-body ($d,p$) reactions to $np$ force models
• Perey-effect in Continuum-Discretized Coupled-Channel description of $(d,p)$ reactions
• Three-body problem with velocity-dependent optical potentials: a case of $(d,p)$ reactions
• Single-particle spectroscopic strength from nucleon transfer reactions with a three-nucleon force contribution
• Three-body optical potentials in $(d,p)$ reactions and their influence on indirect study of stellar nucleosynthesis
• Perturbative correction to the adiabatic approximation for $(d,p)$ reactions