Is there a Pronounced Giant Dipole Resonance in ^4He?
Nuclear Theory
2009-10-30 v1
Abstract
A four-nucleon calculation of the total ^4He photodisintegration cross section is performed. The full final-state interaction is taken into account for the first time. This is achieved via the method of the Lorentz integral transform. Semi-realistic NN interactions are employed. Different from the known partial two-body ^4He(\gamma,n)^3He and ^4He(\gamma,p)^3H cross sections our total cross section exhibits a pronounced giant resonance. Thus, in contrast to older data, we predict quite a strong contribution of the channel at the giant resonance peak energy.
Keywords
Cite
@article{arxiv.nucl-th/9706035,
title = {Is there a Pronounced Giant Dipole Resonance in ^4He?},
author = {V. D. Efros and W. Leidemann and G. Orlandini},
journal= {arXiv preprint arXiv:nucl-th/9706035},
year = {2009}
}
Comments
10 pages, Latex (REVTEX), 4 Postscript figures, to appear in Phys. Rev. Lett