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Is there a Pronounced Giant Dipole Resonance in ^4He?

V. D. Efros·W. Leidemann·G. Orlandini
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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(γ,n)^3He and ^4He(γ,p)^3H cross sections our total cross section exhibits a pronounced giant resonance. Thus, in contrast to older $(γ,np)$ data, we predict quite a strong contribution of the $(γ,np)$ channel at the giant resonance peak energy.

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V. D. Efros, W. Leidemann, G. Orlandini. 1997-06-16. Is there a Pronounced Giant Dipole Resonance in ^4He?. https://doi.org/10.1103/physrevlett.78.4015

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