CLAS physics database search results Measurement E159M588 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Stat. error deg mcb/rad mcb/rad 9 0.941796 0.241165 27 1.40202 0.238153 45 1.62116 0.251177 63 1.86332 0.274695 81 2.14548 0.325057 99 1.65579 0.250519 117 1.40336 0.242773 135 1.36643 0.241572 153 1.55901 0.276495 171 1.14266 0.259457