CLAS physics database search results Measurement E159M1029 E1-6 V. Burkert 2001 theta(pi-) dsigma/d(−cos(theta_pim)) Data errors deg mcb/rad mcb/rad 9 0.437617 0.135422 27 0.705413 0.160932 45 0.760966 0.151952 63 0.770499 0.133336 81 0.890412 0.151921 99 0.75903 0.130289 117 0.761178 0.16681 135 0.685755 0.166266 153 0.389469 0.122819 171 0.431528 0.151426