CLAS physics database search results Measurement E1M559 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 14.053551 2.3844213 27 16.720655 3.2592268 45 11.472507 1.0780705 63 9.6484642 0.52273005 81 8.3565178 0.37352294 98.99999 9.0721359 0.55490029 117 9.6890898 0.45843619 135 9.2008228 0.62174374 153 10.291698 1.6723201 171 7.8897376 0.16538602