ar X iv : n uc l - th / 0 50 60 74 v 1 2 4 Ju n 20 05 Polarization observables in the semiexclusive photoinduced three - body breakup of 3
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چکیده
Polarization observables in the semiexclusive photoinduced three-body breakup of 3 He. Abstract The photon and 3 He analyzing powers as well as spin correlation coefficients in the semiexclusive three-body photodisintegration of 3 He are investigated for incoming photon laboratory energies E γ =12, 40 and 120 MeV. The nuclear states are obtained by solving three-body Faddeev equations with the AV18 nucleon-nucleon potential alone or supplemented with the UrbanaIX three-nucleon force. Explicit π-and ρ-meson exchange currents are taken into account, but we also compare to other models of the electromagnetic current. In some kinematical conditions we have found strong effects of the three-nucleon force for the 3 He analyzing power and spin correlation coefficients, as well strong sensitivities to the choice of the currents. This set of predictions should be a useful guidance for the planning of measurements. In addition, we compare our results for two-body 3 He breakup induced by polarized photons with a few existing data.
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