CLAS physics database search results Measurement E216M870 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.09306 0.00826769 0.01026574 54 0.093241 0.00795671 0.00832103 90 0.0921521 0.00621636 0.00714752 126 0.0911726 0.00506096 0.00903256 162 0.109013 0.00575355 0.00930489 198 0.100646 0.00588913 0.00787428 234 0.0913617 0.00521032 0.00713147 270 0.0864264 0.00587066 0.00694091 306 0.088501 0.00979076 0.00771582 342 0.0635894 0.00549879 0.00788976