Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1997-06-16
Phys.Rev.Lett. 78 (1997) 4015-4018; Erratum-ibid. 80 (1998) 1570
Physics
Nuclear Physics
Nuclear Theory
10 pages, Latex (REVTEX), 4 Postscript figures, to appear in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.78.4015
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 $(\gamma,np)$ data, we predict quite a strong contribution of the $(\gamma,np)$ channel at the giant resonance peak energy.
Efros Victor D.
Leidemann Winfried
Orlandini Giuseppina
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