Theory of Photopion Production from Nucleons |
Common terms and phrases
angular distribution annihilation operators assumed behavior bound field bound functions core cross section curve cutoff function detailed direct ejection direct photo ejection discussed effect of orthogonality eigenstates electric multipole transitions electric quadrupole energy dependence ENERGY IN MEV excitation term fp(k gonal ground state vector H₂ hamiltonian hermitian conjugate incoming photon initial and final initial nucleon spins interaction phase shift isotopic spin m₁ m₂ magnetic dipole magnetic quantum matrix element neglected neutral pions nucleon ground nucleon state vector obtain orthogonality functions orthogonality phase shift orthogonality scattering parameter parity perturbation theory photo excitation photon energy PHOTON LAB photon polarization pion cloud pion field pion nucleon scattering Po-H positive pion quantum numbers rest mass S-wave Sachs scattering phase shifts sharp cutoff Siegert theorem calculation single pion total angular momentum transition amplitude unbound pion wave cross wave functions wave photoproduction wave pions прро