CLAS physics database search results Measurement E216M411 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.426099 0.154815 0.14787081 54 0.234103 0.0208706 0.0301374 90 0.185949 0.00868133 0.01593879 126 0.173791 0.00942588 0.01397607 162 0.182115 0.00967653 0.01500001 198 0.189095 0.00806595 0.01550766 234 0.178828 0.00922897 0.01636675 270 0.168534 0.00878932 0.01403897 306 0.225922 0.0120825 0.02309423 342 0.238146 0.0154671 0.04570318