CLAS physics database search results Measurement E151M2117 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.65 198 -0.3383 0.922 0.0432 0.75 66 -1.2926 0.9269 0.1225 0.75 210 -2.2887 0.6932 0.2125 0.75 222 1.6937 0.7649 0.1585 0.75 270 -0.066 0.7633 0.0306 0.75 282 0.7661 0.7267 0.0765 0.85 114 1.4721 0.9653 0.1386 0.85 210 0.758 1.0075 0.0758 0.85 222 1.346 1.0461 0.1273 0.85 234 -2.3807 0.8644 0.2208 0.45 126 -0.9395 0.7786 0.0681 0.45 282 -0.1369 0.7742 0.0313 0.55 78 0.3573 0.7997 0.038 0.55 138 0.3184 0.8764 0.0365 0.55 210 -0.7046 0.9823 0.0548 0.65 198 -0.9179 0.9923 0.0668 0.75 210 -0.6121 0.9666 0.0499 0.75 222 -0.6843 0.85 0.0537 0.75 282 -0.7523 0.7693 0.0574 0.75 294 0.7845 0.7723 0.0592 0.85 102 0.0846 0.8585 0.0305 0.85 114 0.6617 0.8824 0.0525 0.85 210 -0.854 1.0174 0.0631