CLAS physics database search results Measurement E1M239 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 7.0549507 2.0297191 27 13.001225 3.3208251 45 4.4804235 1.0752041 63 6.313067 1.7381244 81 5.9499664 1.082109 98.99999 5.5435481 0.78525507 117 6.3334603 0.99076402 135 4.7156358 0.94848841 153 5.8348875 1.7468102 171 3.4345043 0