CLAS physics database search results Measurement E216M403 CLAS12 Run Group A Krishna Chandra 2018 theta(pi-) dsigma/d(−cos(theta_pim)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 0.958316 0.0835494 0.13159624 27 0.979947 0.05882 0.10571517 45 0.761153 0.0404599 0.09612952 63 0.622408 0.0475259 0.06824372 81 0.588086 0.0317645 0.0547493 99 0.513117 0.0280605 0.05413886 117 0.552034 0.0250372 0.05110133 135 0.594865 0.0369293 0.05555386 153 0.72764 0.0535935 0.07755519 171 0.79793 0.0609538 0.08271152