CLAS physics database search results Measurement E151M660 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.35 270 1.3871 0.7968 0.09 0.65 114 0.3399 0.7906 0.0365 0.65 126 0.534 0.773 0.0444 0.65 138 -0.2619 0.7746 0.034 0.65 210 1.4958 0.7904 0.0963 0.65 222 0.3581 0.7504 0.0371 0.65 282 -0.3717 0.7228 0.0376 0.65 294 0.8715 0.8788 0.0612 0.75 114 -1.3285 0.6108 0.0866 0.75 126 -1.0322 0.6742 0.0699 0.75 138 -0.2041 0.7664 0.0325 0.75 210 0.3682 0.7637 0.0375 0.75 222 0.7879 0.7509 0.0568 0.75 234 -0.5062 0.6743 0.0431 0.75 282 0.7159 0.689 0.0531 0.75 294 1.9929 0.6836 0.1255 0.85 102 -0.0931 0.6615 0.0305 0.85 114 0.0364 0.731 0.0301 0.85 210 -0.1968 0.5933 0.0323 0.85 222 1.0333 0.6952 0.07 0.85 234 -0.5274 0.5255 0.0441 0.85 246 0.9968 0.6551 0.0679 0.95 126 -1.9474 0.3924 0.1228 0.95 234 -0.2477 0.6437 0.0336 0.95 246 -1.1431 0.5129 0.0761