CLAS physics database search results Measurement E216M764 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 0.132477 0.0497993 0.02822552 27 0.143197 0.0255531 0.01508011 45 0.126254 0.0183433 0.01023573 63 0.134666 0.0165989 0.01213252 81 0.1002 0.0139399 0.00978145 99 0.0980684 0.0153622 0.01614544 117 0.0542704 0.0174125 0.01527165 135 0.105204 0.0321119 0.03517879 153 0.0796972 0.00084491 0.04504667 171 0.104828 8.733e-05 0.05558129