CLAS physics database search results Measurement E151M1957 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.65 270 -4.708 1.7915 0.4337 0.65 282 3.7604 1.8132 0.3469 0.75 258 2.5485 2.3057 0.2361 0.75 270 2.4642 2.2719 0.2284 0.75 282 -0.5684 2.2864 0.0602 0.85 102 -2.8986 2.779 0.2681 0.85 114 2.5122 2.9277 0.2328 0.85 126 0.4497 3.2333 0.0511 0.95 102 -7.8299 8.3368 0.7202 0.95 126 -5.059 9.3339 0.4659 0.55 270 -0.4075 0.5341 0.04 0.55 282 -0.5654 0.4773 0.0475 0.65 270 -0.0703 0.5293 0.0303 0.65 282 0.7595 0.4755 0.0578 0.75 90 -1.1757 0.4953 0.0822 0.75 102 -0.1654 0.5959 0.0319 0.75 258 -0.1822 0.5578 0.0323 0.75 270 0.4942 0.4061 0.044 0.75 282 0.0656 0.4053 0.0303 0.85 78 -0.8984 0.5482 0.0657 0.85 90 0.0523 0.5312 0.0302 0.85 102 0.7686 0.4801 0.0583 0.85 114 0.3486 0.5424 0.0376 0.85 258 0.5024 0.6028 0.0444 0.85 282 -0.267 0.5983 0.0347 0.95 90 -0.2298 0.9401 0.0335 0.95 102 -0.9097 0.907 0.0663 0.95 114 -0.1201 0.8423 0.031 0.95 126 0.2272 0.7973 0.0334 0.95 138 0.3331 0.9467 0.037 0.95 150 -1.4701 0.9917 0.1002