CLAS physics database search results Measurement E151M2254 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.15 294 2.2576 0.6622 0.1664 0.45 90 -0.0876 0.8528 0.0307 0.45 102 0.3974 1.0057 0.0416 0.55 78 0.3317 0.7451 0.0385 0.55 90 -0.0035 0.8318 0.03 0.55 102 0.355 0.7521 0.0395 0.65 54 0.6325 0.8667 0.0548 0.65 78 0.274 0.6822 0.036 0.65 90 0.1175 0.7736 0.0312 0.65 102 0.9615 0.8939 0.0759 0.65 114 -0.2382 0.8587 0.0346 0.65 258 0.7171 0.8243 0.06 0.65 270 1.2957 0.8698 0.0986 0.75 54 -0.534 0.854 0.049 0.75 78 -0.5212 0.726 0.0483 0.75 90 -0.0372 0.7784 0.0301 0.75 102 0.7488 0.7473 0.062 0.75 114 1.2477 0.7682 0.0953 0.75 222 -0.5305 0.9942 0.0488 0.75 246 0.74 0.7622 0.0615 0.75 258 -1.2468 0.6217 0.0953 0.75 270 -1.4167 0.5961 0.107 0.75 282 0.1691 0.7787 0.0324 0.85 54 1.489 0.6383 0.1121 0.85 78 -0.8724 0.803 0.07 0.85 90 1.515 0.6699 0.1139 0.85 102 -0.3828 0.8123 0.0409 0.85 210 0.9761 0.8231 0.0769 0.85 222 0.3177 0.8109 0.0378 0.85 234 0.1921 0.7837 0.0331 0.85 246 1.4768 0.6735 0.1112 0.85 258 0.0688 0.822 0.0304 0.85 270 1.2896 0.7589 0.0982 0.85 282 1.1228 0.7005 0.0868 0.85 294 -0.4341 0.7179 0.0435 0.85 306 -0.4775 0.6806 0.0458 0.85 318 -0.9868 0.6209 0.0776 0.95 234 0.5785 0.8057 0.0516 0.95 258 0.8907 0.666 0.0712 0.95 282 0.5129 0.7962 0.0478 0.95 306 0.0311 0.7626 0.0301 0.95 318 0.2036 0.6255 0.0334 0.95 330 0.9631 0.6901 0.076