CLAS physics database search results Measurement E151M2047 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.65 102 0.2679 0.6682 0.0347 0.65 114 2.6644 0.999 0.2467 0.65 246 0.3436 0.6659 0.0494 0.75 90 0.6503 0.7199 0.0519 0.75 102 -0.3928 0.5804 0.043 0.75 114 -0.3743 0.6256 0.059 0.75 126 0.1919 0.7189 0.041 0.75 138 -3.4342 3.4342 0.317 0.75 234 0.1224 0.8267 0.031 0.75 246 0.9459 0.5969 0.1117 0.75 258 -0.3611 0.5789 0.0918 0.85 114 -1.6102 1.4271 0.151 0.85 246 0.4961 1.1014 0.0546 0.85 258 -0.0541 1.1034 0.0304 0.85 270 -0.6435 1.1145 0.0663 0.95 246 1.5311 3.2149 0.1439 0.95 270 2.677 3.3871 0.2478 0.95 282 -2.1739 2.8325 0.202 0.75 270 0.3629 0.8816 0.0382 0.85 66 0.2315 0.8313 0.0336 0.85 102 0.9142 0.8524 0.0666 0.85 114 -0.6054 0.8328 0.0495 0.85 126 -0.2599 0.7619 0.0344 0.85 222 -0.5365 0.9431 0.046 0.85 246 -1.4448 0.7384 0.0987 0.85 258 0.8464 0.7365 0.0627 0.85 282 0.5673 0.862 0.0476 0.95 222 2.3983 1.4558 0.1589 0.95 258 1.4422 1.3386 0.0985 0.95 270 2.0013 1.1706 0.1336 0.95 282 -0.1585 1.0513 0.0317