CLAS physics database search results Measurement E216M314 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 1.97204 0.0862792 0.1584883 27 1.79001 0.0530772 0.13857545 45 1.93667 0.040327 0.14848145 63 1.90166 0.039264 0.13748481 81 2.01662 0.0703503 0.15010655 99 1.97545 0.047356 0.14491282 117 1.94204 0.0506824 0.23100472 135 1.95336 0.12315 0.3112634 153 1.19152 0.0814271 0.47659808 171 1.69117 0.0142596 1.00114373