CLAS physics database search results Measurement E159M543 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Stat. error deg mcb/rad mcb/rad 9 2.53478 0.587894 27 2.57434 0.388314 45 2.29162 0.332253 63 1.70168 0.244128 81 1.81048 0.272052 99 1.61645 0.244185 117 1.95306 0.336206 135 1.98575 0.311335 153 2.36271 0.37453 171 1.63497 0.341367