CLAS physics database search results Measurement E169M123 g11 E. Golovach 2005 theta(pi+) dsigma/d(−cos(theta_pip)) Data errors rad mcb mcb 0.1122 43.7268 8.99249 0.336599 48.1137 4.91237 0.560999 46.8983 3.55555 0.785398 43.3587 3.34525 1.0098 37.1902 2.68657 1.2342 27.6195 2.16164 1.4586 22.0875 1.58201 1.683 19.0583 1.3151 1.9074 19.6774 1.12351 2.1318 18.2262 1.01033 2.35619 18.7195 1.03919 2.58059 20.8456 1.80238 2.80499 28.4976 10.1399 3.02939 34.7715 13.5527