CLAS physics database search results Measurement E151M2375 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.55 102 -0.1189 1.0703 0.0312 0.55 114 -1.4408 1.0264 0.1087 0.55 126 -0.6002 1.077 0.0529 0.65 114 -3.2343 3.2343 0.2364 0.65 126 -1.2001 0.9834 0.092 0.65 210 -0.135 0.9347 0.0316 0.65 222 -2.7081 0.7179 0.1986 0.65 294 -0.6061 0.9218 0.0532 0.75 78 -2.1776 0.9293 0.1607 0.75 90 0.3662 1.0277 0.0401 0.75 126 -1.3357 0.9377 0.1014 0.75 138 -2.4374 0.9492 0.1793 0.75 198 -1.3977 0.8996 0.1057 0.75 210 0.0787 0.8512 0.0305 0.75 222 0.7361 0.875 0.0612 0.75 234 1.1881 0.9219 0.0912 0.75 246 -1.8984 0.8394 0.1409 0.75 282 -0.1021 0.9133 0.0309 0.85 78 -0.684 0.8713 0.058 0.85 90 -0.3158 0.7661 0.0377 0.85 102 -0.5361 0.7774 0.0491 0.85 114 -1.5165 0.9496 0.114 0.85 174 -1.3216 0.9776 0.1004 0.85 186 -0.5166 0.8162 0.048 0.85 198 -0.5423 0.7592 0.0495 0.85 210 0.8569 0.8175 0.069 0.85 222 -0.309 0.7781 0.0374 0.85 234 0.1797 0.744 0.0327 0.85 246 -0.0541 0.9763 0.0303 0.95 174 -1.1104 0.9903 0.0859 0.95 186 -0.9101 0.955 0.0725 0.95 198 -0.0253 0.7724 0.0301 0.95 210 -0.183 0.6875 0.0328 0.95 222 -0.5993 0.7014 0.0528 0.95 234 0.3878 0.8838 0.0411 0.95 246 -1.4222 0.6938 0.1074 0.95 258 0.5686 0.8509 0.051