CLAS physics database search results Measurement E151M1475 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.65 234 0.7093 0.7317 0.051 0.65 246 -1.4117 0.607 0.0874 0.65 258 -0.5633 0.6641 0.0444 0.75 150 -0.1132 0.7551 0.0307 0.75 162 -0.411 0.9336 0.0384 0.75 174 0.1213 1.0027 0.0308 0.75 222 1.1046 0.6852 0.0709 0.75 234 -0.4539 0.7256 0.04 0.75 246 1.0073 0.5735 0.0658 0.75 258 -1.2559 0.5779 0.0789 0.75 270 0.5808 0.8547 0.0452 0.85 246 -0.3487 0.689 0.0362 0.85 258 -0.3291 0.768 0.0356 0.55 246 0.0153 0.697 0.03 0.65 234 -0.5007 0.4998 0.0424 0.65 246 0.6118 0.5707 0.0474 0.65 258 -0.7336 0.5529 0.0532 0.65 270 0.3198 0.6122 0.0356 0.75 150 0.0339 0.6596 0.0301 0.75 162 0.5434 0.7914 0.0443 0.75 222 -0.3568 0.6362 0.0368 0.75 234 -0.1109 0.5255 0.0307 0.75 246 0.0878 0.476 0.0305 0.75 258 -0.6751 0.5366 0.0504 0.75 270 1.762 0.5928 0.1098 0.85 234 0.4866 0.521 0.0418 0.85 246 0.4017 0.5332 0.0385 0.85 258 0.1014 0.5144 0.0306