CLAS physics database search results Measurement E151M1548 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.65 234 0.8337 0.8751 0.0583 0.65 246 0.3384 1.0498 0.0359 0.65 258 -0.34 0.6829 0.0533 0.75 114 0.8058 1.184 0.0556 0.75 126 1.6364 0.7893 0.0998 0.75 234 2.2902 2.2902 0.1365 0.75 246 -1.4927 0.8377 0.0918 0.75 258 1.5991 0.6795 0.0977 0.85 114 0.7517 1.1831 0.053 0.85 138 0.8708 1.2298 0.0589 0.85 246 -0.6763 1.0135 0.0495 0.85 258 0.4347 0.9653 0.0392 0.85 270 -0.2555 0.9752 0.0335 0.85 282 0.5893 0.9934 0.0455 0.85 294 1.2687 0.8899 0.0796 0.95 66 -0.3036 1.1614 0.0348 0.95 270 0.2589 0.8996 0.0336 0.95 282 1.4504 0.7734 0.0895 0.95 294 2.4553 2.4553 0.1459 0.65 270 1.331 0.7857 0.0852 0.75 114 0.0634 0.9293 0.0302 0.75 126 1.2538 1.0175 0.0809 0.75 234 0.6775 0.7702 0.0505 0.75 246 0.0995 0.7614 0.0306 0.75 258 1.5056 0.7874 0.0951 0.75 270 0.5356 0.8447 0.0439 0.75 282 0.8925 0.8746 0.0613 0.85 114 0.8169 0.9352 0.0574 0.85 126 -0.3422 0.7713 0.0363 0.85 150 0.5358 0.8886 0.0439 0.85 234 -0.8281 0.8207 0.058 0.85 258 0.5449 0.8071 0.0443 0.85 270 -1.1477 0.6927 0.075 0.85 282 0.487 0.6913 0.0419 0.85 294 0.5435 0.8821 0.0443 0.95 90 -0.7546 0.7846 0.0543 0.95 282 -0.198 0.6068 0.0323 0.95 294 0.5174 0.7106 0.0431