CLAS physics database search results Measurement E21M2 g1c CLAS experiment K. Hicks 2006 cos(theta_K*) dsigma/dcos(theta K*) Data errors dimensionless nb nb -0.75 53.8 14 -0.35 93.7 23.7 -0.05 73.9 18.8 0.25 42.3 11.9 0.55 52.5 13.6 0.8 140.4 34.4