CLAS physics database search results Measurement E151M734 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.55 282 -0.4404 0.357 0.0417 0.65 258 -0.1319 0.4566 0.0312 0.65 270 1.1958 0.4404 0.084 0.65 282 0.5423 0.4213 0.0465 0.75 258 -0.3004 0.3763 0.0359 0.75 270 0.4514 0.4445 0.0422 0.75 282 -0.2933 0.3904 0.0356 0.85 90 0.2817 0.4782 0.0352 0.85 102 0.5035 0.5201 0.0446 0.85 114 -0.8416 0.3814 0.0628 0.85 126 -0.4428 0.3816 0.0418 0.85 258 0.8918 0.4573 0.0658 0.85 270 -0.3006 0.4033 0.0359 0.95 114 -0.7934 0.6803 0.0601 0.95 126 -0.3176 0.7943 0.0365 0.95 138 -1.2016 0.6361 0.0844 0.95 150 0.2085 0.8101 0.033 0.45 66 0.2203 2.3452 0.0362 0.65 270 -1.7835 1.7774 0.1673 0.65 282 -0.4548 1.889 0.0516 0.75 270 -0.9276 1.4806 0.0907 0.75 282 -0.7123 1.9612 0.0723 0.85 90 -4.2611 2.5107 0.3944 0.85 102 1.0675 2.803 0.103 0.85 114 -2.9202 2.4314 0.2712 0.85 126 -1.4903 2.6893 0.1408 0.85 258 1.9681 2.5107 0.1841 0.85 270 3.5977 2.4956 0.3334 0.95 102 9.4303 8.4647 0.8709 0.95 114 -3.8175 7.9697 0.3536 0.95 126 -5.1937 7.0798 0.4803 0.95 138 6.1798 0.9696 -8.5808 0.95 150 20.4301 8.1001 1.8858 0.95 174 2.8801 7.872 0.2675