Are spectroscopic factors from transfer reactions consistent with asymptotic normalisation coefficients?
Abstract
It is extremely important to devise a reliable method to extract spectroscopic factors from transfer cross sections. We analyse the standard DWBA procedure and combine it with the asymptotic normalisation coefficient, extracted from an independent data set. We find that the single particle parameters used in the past generate inconsistent asymptotic normalization coefficients. In order to obtain a consistent spectroscopic factor, non-standard parameters for the single particle overlap functions can be used but, as a consequence, often reduced spectroscopic strengths emerge. Different choices of optical potentials and higher order effects in the reaction model are also studied. Our test cases consist of: C(d,p)C(g.s.) at MeV, O(d,p)O(g.s.) at MeV and Ca(d,p)Ca(g.s.) at MeV. We underline the importance of performing experiments specifically designed to extract ANCs for these systems.
Cite
@article{arxiv.nucl-th/0701068,
title = {Are spectroscopic factors from transfer reactions consistent with asymptotic normalisation coefficients?},
author = {D. Y. Pang and F. M. Nunes and A. M. Mukhamedzhanov},
journal= {arXiv preprint arXiv:nucl-th/0701068},
year = {2008}
}
Comments
15 pages, 12 figures, Phys. Rev. C (in press)