CLAS physics database search results Measurement E169M33 g11 E. Golovach 2005 theta(pi+) dsigma/d(−cos(theta_pip)) Data errors rad mcb mcb 0.1122 49.1637 16.3717 0.336599 47.3188 6.92778 0.560999 48.0656 5.05716 0.785398 53.0847 4.853 1.0098 49.6158 4.42224 1.2342 40.459 2.93081 1.4586 35.8349 2.42082 1.683 33.7146 2.0016 1.9074 33.6606 1.91335 2.1318 29.1654 1.9505 2.35619 33.7768 2.37154 2.58059 36.2396 7.27249 2.80499 31.9755 8.63821 3.02939 31.6689 8.75289