CLAS physics database search results Measurement E213M158 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 1.4271 0.0872 0.6892 0.9732 27 1.6166 0.1595 0.373 0.5321 45 1.5031 0.0946 0.3275 0.5128 63 1.3522 0.1321 0.4176 0.438 81 1.4831 0.0826 0.3332 0.3433 99 1.4143 0.0685 0.346 0.3527 117 1.2784 0.0732 0.441 0.4471 135 1.2486 0.045 0.6993 0.9513 153 1.3375 0.0042 0.8455 1.2019 171 1.3091 0.0049 0.8276 1.3018