CLAS physics database search results Measurement E151M514 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.65 294 -0.4371 0.4685 0.0402 0.75 90 0.3725 0.6251 0.0377 0.75 102 0.4945 0.6161 0.0426 0.75 114 0.4695 0.6855 0.0415 0.75 258 1.0616 0.6864 0.0715 0.75 282 -0.2208 0.5531 0.0329 0.85 78 0.8663 0.5994 0.0609 0.85 90 0.565 0.5981 0.0458 0.85 102 -0.293 0.4703 0.0349 0.85 114 -0.0239 0.6467 0.03 0.85 270 -0.0707 0.4787 0.0303 0.85 282 0.0583 0.568 0.0302 0.85 294 0.0956 0.4983 0.0306 0.85 306 0.2018 0.5917 0.0324 0.95 78 1.9432 1.9432 0.1226 0.95 90 -1.0491 0.3907 0.0708 0.95 138 0.6113 0.5797 0.0479 0.95 270 0.1509 0.5504 0.0314 0.95 282 0.4336 0.522 0.04