CLAS physics database search results Measurement E216M932 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.0520064 0.00762804 0.00628776 54 0.0453467 0.00521341 0.00465115 90 0.0566762 0.00585442 0.00562397 126 0.0916878 0.0148456 0.013055 162 0.0679904 0.00789155 0.00767915 198 0.0942877 0.0132357 0.0111956 234 0.0606831 0.00716267 0.0066309 270 0.0499811 0.00993382 0.00847921 306 0.0395453 0.00640883 0.0044045 342 0.0474495 0.00532282 0.00593455