CLAS physics database search results Measurement E216M387 CLAS12 Run Group A Krishna Chandra 2018 theta(p) dsigma/d(−cos(theta_pr)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 0.436313 0.076603 0.12644651 27 0.375234 0.0455839 0.09506806 45 0.332703 0.0253392 0.11195171 63 0.367637 0.0312769 0.05620729 81 0.330621 0.024358 0.06078354 99 0.41983 0.0558632 0.07190995 117 0.425109 0.0343187 0.04594706 135 0.39628 0.0459449 0.03908317 153 0.505808 0.0385147 0.05481281 171 0.469175 0.0653215 0.04501155