CLAS physics database search results Measurement E159M986 E1-6 V. Burkert 2001 theta(p) dsigma/d(−cos(theta_pr)) Stat. error deg mcb/rad mcb/rad 9 0.631344 0.209303 27 0.811081 0.232328 45 0.810027 0.216896 63 1.00273 0.226004 81 0.832952 0.156591 99 1.24715 0.253572 117 1.18561 0.242744 135 0.948446 0.223564 153 0.489517 0.114548 171 0.47781 0.154742