Experimental Investigation of Pion Electroproduction

摘要: Measurements of the totel cross section for processes e + p yields e' n pi /sup +/ and 0/ are reported a wide range center-of-mass energies momentum transfers extending above first pionnucleon resonance to 20 F/sup -2/. Only final electron is observed in this experiment. Results analyzed terms nucleon form factors using experimental pion-nucleon phase shifts theory Fubini, Nambu, Wataghin. In general, data seem consistent with current picture structure, except preference negative rather than positive neutron-electric factor, G/sub En/. It demonstrated from angular distribution constant transfer energy that pion electroproduction does fact occur primarily through transverse currents. The general separation into scalar photons inelastic or elastic scattering discussed. addition, an approximate formula background process wide-angle bremsstrahlung quoted which appears be accurate 1--2% over very photon when compared numerical computation bymore » digital computer. (auth)« less