CLAS physics database search results Measurement E216M159 CLAS12 Run Group A Krishna Chandra 2018 psi(p) dsigma/dpsi_pr Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.653133 0.0995952 0.10727944 54 0.441196 0.0162903 0.05475693 90 0.430869 0.0279421 0.03882558 126 0.391221 0.0178754 0.02990829 162 0.409198 0.0112059 0.03448303 198 0.386485 0.017384 0.03448832 234 0.381861 0.0167557 0.03333084 270 0.372214 0.0122842 0.03358754 306 0.483491 0.040836 0.04826889 342 0.55297 0.0787831 0.0934721