Two-body Photodisintegration of $^{4}$He with Full Final State Interaction

Details Two-body Photodisintegration of $^{4}$He with Full Final State Interaction Two-body Photodisintegration of $^{4}$He with Full Final State Interaction

2003-11-20

arxiv.org/abs/nucl-th/0311068v1

Phys.Rev. C69 (2004) 044002

Physics

Nuclear Physics

Nuclear Theory

18 pages, 6 figures

Scientific paper

10.1103/PhysRevC.69.044002

The cross sections of the processes $^4$He($\gamma,p$)$^3$H and $^4$He($\gamma,n$)$^3$He are calculated taking into account the full final state interaction via the Lorentz integral transform (LIT) method. This is the first consistent microscopic calculation beyond the three--body breakup threshold. The results are obtained with a semirealistic central NN potential including also the Coulomb force. The cross sections show a pronounced dipole peak at 27 MeV which lies within the rather broad experimental band. At higher energies, where experimental uncertainties are considerably smaller, one finds a good agreement between theory and experiment. The calculated sum of three-- and four--body photodisintegration cross sections is also listed and is in fair agreement with the data.

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