CLAS physics database search results Measurement E213M572 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 2.6507 0.1848 0.367 0.4109 27 2.3207 0.1064 0.3239 0.3409 45 2.1556 0.1249 0.323 0.3463 63 2.3432 0.1006 0.3276 0.3427 81 2.3608 0.0977 0.3389 0.3527 99 2.3295 0.0728 0.3255 0.3336 117 2.301 0.0788 0.3322 0.3414 135 1.7387 0.0985 0.3452 0.4977 153 1.4984 0.0913 0.642 0.9075 171 2.0095 0.0028 1.2205 1.7277