CLAS physics database search results Measurement E151M2208 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.45 282 0.3722 0.8598 0.0404 0.55 78 0.5166 0.8435 0.048 0.55 90 0.3544 0.8196 0.0395 0.55 270 -0.2025 0.8798 0.0334 0.65 66 0.3068 0.7779 0.0374 0.65 78 0.139 0.7695 0.0316 0.65 90 -0.4943 0.631 0.0467 0.65 102 -0.3541 0.8016 0.0395 0.65 258 1.4934 0.6814 0.1124 0.65 270 0.1381 0.8495 0.0316 0.65 282 -0.3533 0.7151 0.0395 0.65 294 -0.0663 0.7908 0.0304 0.75 66 -0.4146 0.6619 0.0425 0.75 78 0.1232 0.7357 0.0313 0.75 90 1.0818 0.6465 0.084 0.75 102 0.2484 0.6597 0.035 0.75 114 0.1299 0.7909 0.0314 0.75 258 0.5709 0.6812 0.0511 0.75 270 -0.8268 0.6468 0.067 0.75 282 -1.1261 0.5786 0.087 0.75 294 -0.5719 0.7536 0.0512 0.75 306 -0.6189 0.5423 0.054 0.75 318 1.1831 0.6632 0.0909 0.85 66 -1.1394 0.6474 0.0879 0.85 78 0.0838 0.6874 0.0306 0.85 90 -0.6326 0.7254 0.0548 0.85 102 -0.3788 0.7806 0.0407 0.85 114 -1.0302 0.747 0.0805 0.85 222 0.8787 0.9296 0.0704 0.85 234 1.822 0.6672 0.1355 0.85 246 0.6748 0.7054 0.0574 0.85 258 0.2965 0.6114 0.0369 0.85 270 -0.8416 0.6072 0.068 0.85 282 -0.42 0.624 0.0427 0.85 294 -0.3428 0.5266 0.039 0.85 306 0.4506 0.6448 0.0444 0.85 318 0.3707 0.5928 0.0403 0.85 330 0.5091 0.6709 0.0476 0.95 90 1.1474 0.6966 0.0884 0.95 102 0.4045 0.7603 0.042 0.95 114 0.7442 0.7599 0.0617 0.95 234 0.031 0.7266 0.0301 0.95 246 0.5663 0.7685 0.0509 0.95 258 1.03 0.5841 0.0805 0.95 270 1.0089 0.6648 0.0791 0.95 282 1.1574 0.5872 0.0891 0.95 294 0.094 0.6486 0.0308 0.95 318 0.4682 0.6272 0.0453