CLAS physics database search results Measurement E159M165 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 2.39857 0.456002 27 3.51479 0.558468 45 4.16349 0.649879 63 4.01307 0.610027 81 3.54255 0.542872 99 3.50436 0.571619 117 2.88291 0.44704 135 2.69211 0.432133 153 2.422 0.39098 171 2.6134 0.498405