CLAS physics database search results Measurement E151M2327 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.55 102 -1.1364 1.0647 0.0877 0.55 114 -1.063 1.0309 0.0827 0.55 294 -1.4106 0.8568 0.1066 0.65 102 -0.277 0.8965 0.0361 0.65 114 -0.1432 1.0405 0.0317 0.65 222 0.0891 0.9814 0.0307 0.65 306 1.6205 0.77 0.1213 0.75 54 0.0866 0.9539 0.0307 0.75 66 1.5187 0.8556 0.1141 0.75 78 -0.4631 0.9052 0.045 0.75 102 0.142 0.8129 0.0317 0.75 114 -0.4623 0.9753 0.045 0.75 222 0.2255 0.8528 0.0342 0.75 234 0.7707 0.9322 0.0634 0.75 246 -0.4031 0.8652 0.0419 0.75 258 -1.2772 0.9545 0.0973 0.85 54 0.9438 0.8898 0.0747 0.85 66 -0.3099 0.785 0.0375 0.85 78 -0.7597 0.8962 0.0627 0.85 186 -1.4786 0.9207 0.1113 0.85 198 0.6855 1.0608 0.0581 0.85 210 -0.9816 0.9005 0.0772 0.85 222 0.9589 0.7589 0.0757 0.85 234 0.4588 0.8439 0.0448 0.85 246 1.3935 0.6493 0.1054 0.85 258 0.7867 0.7774 0.0645 0.85 270 1.1237 0.7696 0.0868 0.95 186 1.8513 0.9138 0.1376 0.95 210 -1.4133 0.843 0.1068 0.95 222 -0.2607 0.9447 0.0355 0.95 234 0.87 0.8548 0.0699 0.95 246 0.4366 0.6913 0.0436 0.95 258 0.3074 0.7264 0.0374 0.95 270 0.945 0.6888 0.0748 0.95 282 0.051 0.6507 0.0302 0.95 294 0.1397 0.6644 0.0317 0.95 306 0.0467 0.6558 0.0302 0.95 318 0.8999 0.7512 0.0718