CLAS physics database search results Measurement E151M1907 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.35 78 -2.8347 2.8347 0.1744 0.35 270 0.6738 0.6998 0.0507 0.45 90 0.8282 0.882 0.0585 0.45 126 -1.4922 0.8065 0.0953 0.45 258 0.3794 0.7031 0.0378 0.45 270 -0.575 0.7583 0.046 0.45 282 -0.7678 0.7394 0.0554 0.55 114 0.3501 0.8832 0.0367 0.55 126 -1.1775 0.7565 0.0774 0.55 138 -0.3811 0.7865 0.0379 0.55 210 0.3477 0.7162 0.0367 0.55 222 0.7495 0.7108 0.0544 0.55 258 -1.9293 0.639 0.1207 0.55 270 -0.3283 0.5389 0.036 0.55 282 -0.6801 0.7819 0.051 0.55 318 -0.6528 0.8219 0.0496 0.65 114 1.0442 0.7269 0.07 0.65 126 0.236 0.6465 0.0332 0.65 138 0.8302 0.6398 0.0586 0.65 150 1.0008 0.7762 0.0677 0.65 198 -1.6793 0.6522 0.1061 0.65 210 0.058 0.7511 0.0302 0.65 222 -1.4404 0.5668 0.0923 0.65 270 0.6145 0.7902 0.0478 0.65 282 -0.1194 0.6722 0.0309 0.75 66 -0.416 0.6926 0.0392 0.75 78 1.2788 0.7733 0.0831 0.75 138 -1.7914 0.6862 0.1126 0.75 198 0.0589 0.7251 0.0302 0.75 210 -0.733 0.6997 0.0536 0.75 222 0.1363 0.6308 0.0311 0.75 234 -0.3291 0.802 0.036 0.75 258 -0.5962 0.6278 0.047 0.75 270 0.6805 0.5379 0.051 0.75 282 0.2925 0.5667 0.0348 0.75 294 -0.9325 0.6298 0.064 0.85 114 0.3517 0.6285 0.0368 0.85 126 1.304 0.58 0.0845 0.85 138 -0.6314 0.8131 0.0486 0.85 150 0.0702 0.8305 0.0303 0.85 210 -0.0291 0.602 0.0301 0.85 222 0.5647 0.6662 0.0455 0.85 234 0.1567 0.6588 0.0315 0.85 246 -2.1442 2.1442 0.1333 0.85 258 -0.2879 0.747 0.0347 0.85 270 -0.3774 0.755 0.0377 0.85 282 0.676 0.7639 0.0508