CLAS physics database search results Measurement E151M1855 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.35 282 -1.224 0.7882 0.08 0.35 294 -0.2095 0.8196 0.0326 0.45 282 -0.4147 0.867 0.0391 0.45 294 0.0054 0.8475 0.03 0.55 114 0.3063 0.9076 0.0353 0.55 306 0.3435 0.8135 0.0365 0.65 102 -0.7845 0.83 0.0562 0.65 114 0.7193 0.7208 0.0529 0.65 222 -1.137 0.8095 0.0751 0.65 234 -0.6047 0.8126 0.0474 0.75 102 0.6286 0.7376 0.0485 0.75 114 0.4604 0.7474 0.041 0.75 138 0.0045 0.9633 0.03 0.75 210 -1.5493 0.7545 0.0986 0.75 222 0.1719 0.8909 0.0318 0.75 234 -1.1748 0.7794 0.0772 0.75 246 -0.8629 0.7133 0.0603 0.75 258 -0.4869 0.8954 0.0421 0.85 78 -0.0504 0.8781 0.0302 0.85 90 0.0176 0.7506 0.03 0.85 138 0.9148 0.7586 0.063 0.85 210 0.7539 0.7919 0.0547 0.85 222 0.4701 0.6695 0.0414 0.85 234 0.6562 0.6482 0.0498 0.85 246 -0.0246 0.6349 0.03 0.85 258 1.1639 0.6757 0.0766 0.95 222 -0.4451 0.7684 0.0403 0.95 246 0.821 0.7257 0.0581 0.95 258 -0.5815 0.6367 0.0463 0.95 270 -0.1163 0.695 0.0308 0.95 282 1.617 0.6347 0.1025