CLAS physics database search results Measurement E216M681 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.205286 0.0236218 0.02607173 54 0.143628 0.0112138 0.01251461 90 0.137803 0.0104227 0.01146045 126 0.144251 0.00817404 0.01086759 162 0.144811 0.00714072 0.01169823 198 0.146083 0.00805272 0.0130553 234 0.148492 0.0120342 0.01383247 270 0.120218 0.011365 0.00971441 306 0.185319 0.0179272 0.01757898 342 0.151937 0.0138899 0.02158848