CLAS physics database search results Measurement E1M58 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 theta(pi+) dsigma/d(−cos(theta_pip)) Stat. error deg mcbn/rad mcbn/rad 9 5.6772122 3.160593 27 7.8829131 3.2795007 45 9.9151287 3.7143278 63 6.937675 1.3593776 81 4.4207382 0.91169196 98.99999 5.8523502 1.8113394 117 3.6825044 0.6715548 135 5.0165653 1.0939869 153 4.0645771 1.3144079 171 4.5743732 0