CLAS physics database search results Measurement E1M658 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 7.1696525 1.2231221 27 9.4391489 1.4046818 45 8.3529072 0.68973809 63 7.7905641 0.71897411 81 7.877593 0.43610001 98.99999 7.093626 0.34695509 117 7.3085709 0.38161701 135 7.1788802 0.48915592 153 9.4775038 1.3394996 171 6.3628955 0.30199867