CLAS physics database search results Measurement E151M1152 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.55 102 0.6887 0.9663 0.0586 0.55 114 -1.8618 0.626 0.1393 0.55 126 -0.2556 0.9282 0.0353 0.55 222 1.6682 1.1097 0.1256 0.65 102 0.6656 0.9539 0.0572 0.65 114 0.1592 0.9803 0.0322 0.65 126 -0.0788 0.8286 0.0305 0.65 138 -1.2754 0.7079 0.0979 0.65 198 1.6178 1.0295 0.122 0.65 210 1.0461 0.9197 0.0821 0.65 234 0.0435 0.9417 0.0302 0.65 282 -1.1176 0.638 0.087 0.75 90 -0.5724 0.6286 0.0515 0.75 102 -0.9113 0.6892 0.0731 0.75 114 1.0598 0.9907 0.0831 0.75 126 1.2314 0.9861 0.0949 0.75 186 -1.3015 0.6226 0.0997 0.75 198 0.2903 0.7788 0.0367 0.75 210 1.2841 0.8911 0.0985 0.75 222 -0.1534 0.6686 0.032 0.75 234 -1.3928 0.6017 0.1061 0.75 246 0.9827 1.134 0.0778 0.75 282 -1.1111 0.5378 0.0866 0.75 294 0.8487 0.6837 0.0689 0.85 78 -0.6299 0.6352 0.055 0.85 90 0.0169 0.6824 0.03 0.85 102 -0.6351 0.5468 0.0553 0.85 114 -0.4569 0.6765 0.0449 0.85 174 -0.3101 0.8626 0.0376 0.85 186 -0.26 0.5675 0.0355 0.85 198 -0.1785 0.5586 0.0327 0.85 210 0.7538 0.6615 0.0627 0.85 222 -0.3476 0.5394 0.0393 0.85 234 -0.0742 0.601 0.0305 0.85 246 0.282 0.8483 0.0364 0.85 258 0.3202 0.9265 0.038 0.95 174 -1.1587 0.6249 0.0898 0.95 186 0.2758 0.7541 0.0361 0.95 198 -0.3755 0.6945 0.0407 0.95 210 0.1367 0.7907 0.0316 0.95 222 0.8528 0.7152 0.0692 0.95 234 0.7115 0.6722 0.06 0.95 246 0.6053 0.7752 0.0535