CLAS physics database search results Measurement E151M888 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.65 114 -0.1277 0.8207 0.0322 0.65 126 -1.2974 0.6019 0.1234 0.65 210 -0.3189 0.6937 0.042 0.65 222 -0.2811 0.7176 0.0397 0.75 126 1.6863 0.9388 0.1585 0.75 138 -0.5645 0.8192 0.0601 0.75 282 0.9888 0.7548 0.0961 0.85 90 0.097 0.8861 0.0313 0.85 210 -0.4896 0.7936 0.0542 0.85 222 0.5961 0.8771 0.0627 0.85 246 -0.8432 0.6517 0.0834 0.35 282 -1.1834 0.5752 0.0833 0.45 270 0.1002 0.6346 0.0307 0.45 282 0.2753 0.71 0.035 0.55 270 -0.7984 0.6522 0.0604 0.65 102 -0.303 0.7219 0.036 0.65 126 -0.0698 0.7243 0.0303 0.75 126 0.1391 0.7868 0.0314 0.75 210 1.5235 0.8561 0.1044 0.75 222 0.1897 0.7894 0.0325 0.75 282 1.0253 0.8235 0.0737 0.75 294 0.9203 0.7609 0.0674 0.85 90 -1.9479 0.4862 0.1313 0.85 102 -1.2385 0.6723 0.0866 0.85 114 -0.8337 0.7836 0.0624 0.85 210 -0.754 0.8638 0.0579 0.85 222 -0.1858 0.8673 0.0324 0.85 234 -0.2275 0.6963 0.0335 0.85 246 1.0162 0.8319 0.0731 0.95 234 0.2418 1.3248 0.0339 0.95 246 0.3548 1.3519 0.038