CLAS physics database search results Measurement E159M201 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 4.40335 0.774537 27 4.57994 0.721338 45 3.55668 0.540028 63 3.29495 0.493546 81 3.35905 0.510477 99 2.88115 0.442289 117 3.00221 0.463099 135 3.08646 0.480176 153 3.32335 0.530586 171 3.11544 0.559353