CLAS physics database search results Measurement E216M287 CLAS12 Run Group A Krishna Chandra 2018 theta(pi+) dsigma/d(−cos(theta_pip)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 1.03587 0.0797336 0.08438548 27 1.02647 0.0459516 0.08278136 45 0.909746 0.0305975 0.07132967 63 0.861221 0.0281281 0.07120551 81 0.866299 0.0307958 0.06853839 99 0.942439 0.0360254 0.07475975 117 0.915514 0.0432368 0.11591277 135 0.849856 0.0451493 0.18578292 153 0.734515 0.0419695 0.30261719 171 1.05144 0.00801357 0.55122139