th / 0 30 50 74 v 2 3 1 Ju l 2 00 3 Meson Exchange Currents in ( e , e ′ p ) recoil polarization observables

- th / 0 30 50 74 v 1 2 6 M ay 2 00 3 Meson Exchange Currents in ( e , e ′ p ) recoil polarization observables

A study of the effects of meson-exchange currents and isobar configurations in A(e, e ′ p)B reactions is presented. We use a distorted wave impulse approximation (DWIA) model where final-state interactions are treated through a phenomenological optical potential. The model includes relativistic corrections in the kinematics and in the electromagnetic one-and two-body currents. The full set of p...

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

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 ...

- th / 0 41 20 01 v 1 1 D ec 2 00 4 Different formulations of 3 He and 3 H photodisintegration

Different momentum space Faddeev-like equations and their solutions for the radiative pd-capture and the three-nucleon photodisintegration of 3 He are presented. Applications are based on the AV18 nucleon-nucleon and the Urbana IX three nucleon forces. Meson exchange currents are included using the Siegert theorem. A very good agreement has been found in all cases indicating the reliability of ...

th / 0 30 20 04 v 1 3 F eb 2 00 3 Semi - relativistic meson exchange currents in ( e , e ′ ) and ( e , e ′ p ) reactions

Electron-induced one-nucleon knock-out observables are computed for moderate to high momentum transfer making use of semi-relativistic expressions for the one-body and two-body mesonexchange current matrix elements. Emphasis is placed on the semi-relativistic form of the ∆-isobar exchange current and several prescriptions for the dynamical-equivalent form of the ∆-propagator are analyzed. To th...

- th / 0 21 00 78 v 1 2 5 O ct 2 00 2 PRODUCTION MECHANISMS AND POLARIZATION OBSERVABLES FOR p + d → 3 He + π o NEAR THRESHOLD