CLAS physics database search results Measurement E1M299 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 5.4682817 1.1036403 27 10.578182 3.5406885 45 6.0930047 1.4618554 63 4.4801769 0.8092922 81 3.4111416 0.59289956 98.99999 3.5154686 0.61741734 117 4.1773272 0.93468821 135 4.3922133 0.68265802 153 3.9897132 0.96918815 171 2.8228121 0