CLAS physics database search results Measurement E169M87 g11 E. Golovach 2005 theta(pi+) dsigma/d(−cos(theta_pip)) Data errors rad mcb mcb 0.1122 33.9121 7.18075 0.336599 41.6372 4.54752 0.560999 44.2292 3.94867 0.785398 43.4721 3.7597 1.0098 39.0218 3.01975 1.2342 30.8485 2.42013 1.4586 26.2487 1.87897 1.683 22.7989 1.47397 1.9074 23.1933 1.20124 2.1318 19.3056 1.00613 2.35619 20.955 1.10224 2.58059 22.5744 2.47291 2.80499 27.0905 8.86303 3.02939 29.3208 10.3074