CLAS physics database search results Measurement E151M1437 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.65 258 -0.4511 0.48 0.0404 0.75 174 0.4982 0.6242 0.0423 0.75 234 -0.6101 0.6176 0.0473 0.75 246 -0.378 0.6414 0.0376 0.75 258 0.0106 0.5235 0.03 0.85 162 0.7724 0.5831 0.0552 0.55 258 0.7949 0.6762 0.0551 0.55 270 -0.2825 0.7622 0.0342 0.65 246 -0.1465 0.7683 0.0312 0.65 258 -0.3938 0.7155 0.0377 0.75 174 1.2488 0.6071 0.0786 0.75 258 -0.6279 0.6983 0.0473 0.75 270 0.1371 0.6691 0.031