Theory of Photopion Production from Nucleons |
Common terms and phrases
additional angular momentum assumed assumptions becomes behavior bound calculation Chapter charge cloud compared complete considered consisting constant contains contributions core corresponding coupling cross cross section curve cutoff dependence detailed determined dipole direct ejection direct photo discussed distribution effect eigenstates ejection electric energy equation evaluated excitation expansion experimental explicitly expression field Figure final follows given ground hamiltonian incoming initial and final integral interaction intermediate involving isotopic spin known magnetic magnitude mass matrix element neglected neutral pions nucleon spin obtain operator orbital orthogonality orthogonality scattering parameter parity photon photoproduction physical pion field pion nucleon scattering portion positive pion production referred resonance result S-wave scattering phase shifts Siegert theorem similar single specific structure suggests term theory transition transition amplitude unbound pion vector wave functions прро