CLAS physics database search results Measurement E151M2220 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.55 66 -1.1018 0.7613 0.0853 0.55 78 0.9946 0.8952 0.0781 0.55 90 0.5028 0.6408 0.0472 0.55 102 -0.93 0.8101 0.0738 0.65 66 0.2409 0.9087 0.0347 0.65 78 -0.4355 0.7996 0.0436 0.65 90 1.1186 0.7664 0.0865 0.65 258 0.6802 0.6879 0.0577 0.65 282 0.3368 0.6544 0.0387 0.75 66 -0.24 0.8264 0.0347 0.75 78 0.0262 0.723 0.0301 0.75 90 -0.1353 0.6495 0.0316 0.75 102 -0.1722 0.7919 0.0325 0.75 114 0.2384 0.9416 0.0346 0.75 246 0.632 0.8339 0.0548 0.75 258 1.3131 0.6487 0.0998 0.75 270 -0.3228 0.6847 0.0381 0.75 282 0.196 0.6059 0.0332 0.75 294 -0.8439 0.63 0.0682 0.75 306 -1.2631 0.6784 0.0964 0.75 318 -0.4629 0.6615 0.045 0.85 66 -0.2272 0.9244 0.0342 0.85 78 -0.3622 0.6748 0.0399 0.85 90 0.5598 0.8343 0.0505 0.85 102 -0.5568 0.6717 0.0503 0.85 114 -0.8759 0.8061 0.0702 0.85 126 1.2766 0.808 0.0973 0.85 234 0.5816 0.8878 0.0518 0.85 246 0.2901 0.6719 0.0366 0.85 258 0.9448 0.6688 0.0748 0.85 270 -0.5582 0.6729 0.0504 0.85 282 0.1808 0.6703 0.0327 0.85 294 0.7342 0.6237 0.0611 0.85 306 0.3789 0.577 0.0407 0.85 318 0.9572 0.5447 0.0756 0.85 330 0.1125 0.6153 0.0311 0.95 90 0.2233 0.7262 0.0341 0.95 234 -0.1206 0.7951 0.0312 0.95 246 0.6819 0.6292 0.0578 0.95 258 0.0438 0.6442 0.0302 0.95 270 0.5422 0.7392 0.0495 0.95 282 0.5437 0.6818 0.0495 0.95 306 0.683 0.6932 0.0579 0.95 318 -0.0531 0.7036 0.0302 0.95 330 0.3096 0.7469 0.0375