CLAS physics database search results Measurement E159M579 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 0.717312 0.206806 27 1.32859 0.233171 45 1.64279 0.262795 63 1.95202 0.29523 81 1.65807 0.24162 99 1.58143 0.231967 117 1.59356 0.265886 135 1.36617 0.226789 153 1.50532 0.257958 171 1.23235 0.258999