CLAS physics database search results Measurement E216M707 CLAS12 Run Group A Krishna Chandra 2018 psi(pi+) dsigma/dpsi_pip Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 18 0.135758 0.0102517 0.01323491 54 0.13449 0.00616179 0.01163972 90 0.153101 0.0068093 0.01346617 126 0.183864 0.00952226 0.01524015 162 0.183155 0.0105078 0.01524659 198 0.17948 0.0105734 0.01557248 234 0.179312 0.009303 0.01447581 270 0.1471 0.00856289 0.01256173 306 0.139651 0.00911503 0.01232949 342 0.14222 0.0110709 0.01555473