Abstract
The photoproduction of neutral pions on 7Li is studied in the elastic as as well as in inelastic channels leading to excited states and the relative contributions of the spin-dependent and spin-independent amplitudes to the differential cross sections are estimated. Numerical results obtained using oscillator wave functions are compared with available experimental data at 166 MeV, which leads to a best fit for a value of the nuclear radius parameter ⋎ o =1.2 fm . in good agreement with latest electron scattering results. This value is unaltered by taking into account the inelastic contribution leading to the low-lying first excited state. The inelastic differential cross section leading to the 4.63 MeV ( ⩽ 7 2 − ) state is computed using the spin assignments 5 2 and 7 2 , while that leading to the 11.13 MeV ( 3 2 − ) isobaric quartet state is calculated assuming it to be the [21] 42 P 3 2 state. The transition to the quartet state is of considerable interest as it involves only the small F ( 0) term in the photoproduction amplitudes of Chew et al.
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