CLAS physics database search results Measurement E216M627 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.206265 0.00904673 0.0198569 54 0.212991 0.0137094 0.01684846 90 0.214625 0.00766576 0.01668594 126 0.225214 0.00839464 0.0172711 162 0.220588 0.00687924 0.01867032 198 0.212129 0.0187485 0.01746634 234 0.209447 0.00884439 0.01578544 270 0.211784 0.00810289 0.01581528 306 0.215045 0.0117697 0.01721186 342 0.184656 0.0134526 0.02173311