CLAS physics database search results Measurement E213M581 E1-6, 2025 R.W. Gothe, A. Trivedi 2001 theta(pi+) dsigma/d(−cos(theta_pip)) Stat. error Syst. error Total error deg mcb/rad mcb/rad mcb/rad mcb/rad 9 2.7309 0.1434 0.3437 0.4859 27 2.7387 0.1342 0.3414 0.4848 45 2.2962 0.1369 0.3142 0.4463 63 2.3783 0.1046 0.3158 0.3327 81 2.4361 0.1087 0.3291 0.3466 99 2.53 0.0771 0.3311 0.3399 117 2.3738 0.0988 0.3206 0.3354 135 1.8802 0.084 0.326 0.4667 153 1.5289 0.093 0.5995 0.8548 171 2.1403 0.0032 1.2857 1.8024