CLAS physics database search results Measurement E1M93 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 theta(pi-) dsigma/d(−cos(theta_pim)) Stat. error dimensionless mcbn/rad mcbn/rad 9 6.0790205 2.6509416 27 9.2885132 2.3151653 45 8.5339642 2.1321929 63 8.269866 3.1779723 81 4.7881646 1.0931152 98.99999 2.4191122 0.36441684 117 3.6981027 0.76643473 135 3.8533351 1.4571793 153 4.8628511 1.2022778 171 3.6284139 1.5414832