CLAS physics database search results Measurement E151M1699 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.35 78 -0.1508 0.6366 0.0314 0.45 66 0.5435 0.5571 0.0445 0.45 78 -0.02 0.3891 0.03 0.45 282 -0.3875 0.6987 0.0381 0.55 78 -0.1461 0.4324 0.0313 0.55 90 -1.077 0.582 0.0718 0.55 270 0.2194 0.5869 0.0328 0.55 282 0.0349 0.4947 0.0301 0.65 90 0.3123 0.6361 0.0355 0.65 258 0.5629 0.467 0.0454 0.65 270 -0.0046 0.3931 0.03 0.65 282 -0.3283 0.451 0.036 0.75 90 0.2777 0.6819 0.0344 0.75 114 -0.2227 0.6071 0.0329 0.75 126 0.0232 0.6402 0.03 0.75 246 0.6291 0.5122 0.0485 0.75 258 -0.0922 0.4071 0.0305 0.75 270 -0.156 0.3746 0.0315 0.75 282 -0.6836 0.549 0.0511 0.85 90 -0.5449 0.639 0.0446 0.85 102 -0.2286 0.4122 0.033 0.85 114 0.4068 0.3901 0.0388 0.85 126 -0.2597 0.3971 0.0339 0.85 138 0.7215 0.3777 0.053 0.85 150 0.11 0.5727 0.0307 0.85 174 0.9705 0.591 0.066 0.85 234 0.6746 0.6041 0.0507 0.85 246 0.4433 0.566 0.0403 0.85 258 0.4696 0.4258 0.0413 0.85 270 0.3613 0.5637 0.0371 0.95 102 0.5279 0.4764 0.0439 0.95 114 -0.2112 0.4321 0.0326 0.95 126 0.1989 0.4103 0.0323 0.95 138 -0.3139 0.3643 0.0355 0.95 150 0.3724 0.3556 0.0375 0.95 162 0.3696 0.3992 0.0374 0.95 174 0.3244 0.4623 0.0359 0.95 186 0.4014 0.4507 0.0386 0.95 198 -0.5753 0.415 0.046 0.95 210 0.2761 0.5318 0.0344