CLAS physics database search results Measurement E151M1163 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.45 126 -1.2603 0.713 0.0969 0.45 270 0.0584 0.9255 0.0303 0.45 282 -0.3354 0.7869 0.0387 0.55 126 -0.5863 0.9209 0.0523 0.55 138 1.4492 1.1039 0.1101 0.55 210 -0.0393 0.8704 0.0301 0.65 114 -1.0379 0.6749 0.0816 0.65 126 -0.4912 0.7617 0.0468 0.65 138 1.2422 0.9575 0.0956 0.65 186 1.3929 1.0999 0.1061 0.65 198 1.45 1.0659 0.1101 0.65 210 1.5959 0.8766 0.1204 0.65 222 1.0101 0.9342 0.0797 0.65 270 1.1137 0.935 0.0867 0.65 282 0.4834 0.72 0.0463 0.65 294 -0.6001 0.7683 0.0531 0.75 90 0.2416 0.9808 0.0348 0.75 102 2.1705 0.9227 0.1615 0.75 126 1.3229 1.0963 0.1012 0.75 138 0.104 0.9702 0.0309 0.75 186 0.0076 0.9343 0.03 0.75 198 -0.3528 0.7089 0.0396 0.75 210 0.8365 0.7543 0.0681 0.75 222 -0.5276 0.7476 0.0489 0.75 234 1.5531 1.1245 0.1174 0.75 258 0.8584 0.8916 0.0695 0.75 270 0.1075 0.811 0.031 0.75 282 -0.8788 0.5041 0.0709 0.75 294 0.6129 0.8882 0.0539 0.85 90 -0.8275 0.5401 0.0675 0.85 102 0.3171 0.6342 0.0379 0.85 114 -0.3174 0.5711 0.0379 0.85 126 0.0111 0.6737 0.03 0.85 174 -0.3902 0.6337 0.0414 0.85 186 0.7876 0.6752 0.0649 0.85 198 -1.1213 0.5684 0.0873 0.85 210 -0.3135 0.5601 0.0377 0.85 222 0.3493 0.6767 0.0394 0.85 234 0.3659 0.7151 0.0402 0.85 246 -1.0074 0.6314 0.0795 0.95 114 -0.0735 0.8499 0.0305 0.95 186 0.2333 0.7676 0.0345 0.95 198 -0.0222 0.8195 0.03 0.95 210 0.4074 0.749 0.0423 0.95 222 0.4285 0.7843 0.0434 0.95 234 1.8082 0.9648 0.1355 0.95 246 1.3776 0.9147 0.1051