CLAS physics database search results Measurement E169M51 g11 E. Golovach 2005 theta(pi+) dsigma/d(−cos(theta_pip)) Data errors rad mcb mcb 0.1122 39.1457 11.2954 0.336599 44.7255 6.04174 0.560999 46.2677 4.84024 0.785398 47.8207 5.00317 1.0098 44.7445 4.37826 1.2342 35.7091 3.16472 1.4586 32.0667 2.51011 1.683 28.5669 1.98923 1.9074 29.2158 1.92488 2.1318 23.5072 1.30594 2.35619 26.3037 1.74554 2.58059 28.5762 4.6355 2.80499 31.2711 9.86546 3.02939 37.8822 13.2439