CLAS physics database search results Measurement E216M233 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 3.13781 0.0834971 0.28438322 27 2.59869 0.0446291 0.23211354 45 2.14847 0.0390178 0.18428782 63 2.01274 0.0394981 0.1635718 81 2.06898 0.0355152 0.15033172 99 2.13117 0.036456 0.15618922 117 1.98487 0.040405 0.16920138 135 1.85809 0.0396001 0.17790537 153 1.8564 0.110303 0.24840907 171 1.39141 0.0144674 0.79688137