Discrepancy between the Vector Dominance Model and Pion Production by Polarized Photons*
نویسندگان
چکیده
The helicity density matrix for the process 7r-p-T’P-n he1 has been studied as a function of MKT. The ratio p1 1 -I he1 pII shows no variation with Mnr and it thus seems unlikely that the large discrepancy between the vector dominance prediction and the observed asymmetry of single pions produced by linearly polarized photons could be the result of density-matrix distortion caused by background interference. Twork supported in part by the U. S. ‘Atomic Energy Commission and the National Science Foundation, The vector dominance model has been successfully used’ to relate single pion photoproduction
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