CLAS physics database search results Measurement E151M2105 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.45 126 1.2154 0.9255 0.0846 0.45 270 1.7463 0.735 0.1175 0.55 126 1.2792 0.8634 0.0885 0.55 270 -0.1302 0.8103 0.0312 0.55 282 -1.1358 0.7854 0.0797 0.65 126 0.3021 0.9115 0.0359 0.65 222 -0.2155 0.9624 0.0331 0.75 66 -0.5266 0.8512 0.0455 0.75 126 -0.7702 0.914 0.0584 0.75 138 -0.6052 1.0507 0.0495 0.75 198 -1.6002 0.9941 0.1083 0.75 210 0.468 0.8788 0.0427 0.75 222 -0.3634 0.9345 0.0382 0.75 234 1.2735 0.8638 0.0881 0.75 270 -0.1691 0.9041 0.032 0.75 282 -0.5385 0.7048 0.0461 0.85 114 -0.9872 0.8984 0.0709 0.85 210 0.5381 0.9651 0.0461 0.45 282 1.0946 0.6799 0.105 0.55 114 -0.573 0.9426 0.0606 0.55 126 0.61 0.7935 0.0636 0.55 270 0.0946 0.7759 0.0312 0.65 114 0.463 0.9273 0.0521 0.65 138 -0.8792 0.9467 0.0862 0.65 210 -0.577 0.876 0.0609 0.65 222 -1.1277 0.8222 0.1079 0.75 126 -0.1259 1.0501 0.0322 0.75 138 -1.0828 1.0256 0.1039 0.75 210 -0.3111 0.8784 0.0414 0.75 234 -1.0369 0.7801 0.0999 0.75 282 1.4605 0.6905 0.1375 0.85 102 1.7712 1.1079 0.1655 0.85 114 -0.1767 0.9992 0.0341 0.85 126 -0.4762 1.0312 0.0531 0.85 210 1.1482 0.9359 0.1097 0.85 222 -1.0226 0.9659 0.0987 0.85 234 -1.7383 0.9007 0.1625