CLAS physics database search results Measurement E151M364 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Data errors Systematic errors degrees 0.65 126 0.6545 1.407 0.0495 0.65 246 -1.256 0.5975 0.0814 0.75 222 0.9227 1.2373 0.0631 0.75 234 0.0349 0.8879 0.0301 0.75 246 3.756 3.756 0.2282 0.75 258 1.1215 1.1561 0.0739 0.75 270 -0.5732 0.6715 0.0457 0.85 234 -0.5691 0.8231 0.0455 0.85 246 0.1221 0.853 0.0309 0.85 258 0.8965 1.1511 0.0618 0.85 270 -0.7663 0.6839 0.055 0.85 282 -0.2049 0.9529 0.0324 0.95 78 -1.2853 0.4938 0.083 0.95 246 -0.4061 0.715 0.0387 0.95 270 -0.089 0.8363 0.0305 0.95 282 -0.0516 0.8362 0.0302 0.55 258 0.5401 0.7357 0.0449 0.65 258 -0.171 0.736 0.0318 0.75 126 -0.0782 0.6324 0.0304 0.75 138 -1.4228 0.6293 0.0931 0.75 222 -0.8958 0.6895 0.0631 0.75 258 -0.2637 0.615 0.0342 0.75 270 0.9221 0.7085 0.0645 0.85 246 -0.2385 0.6614 0.0334 0.85 270 0.56 0.6962 0.0459 0.85 282 0.3614 0.6152 0.0374 0.95 282 0.0788 0.6188 0.0304