Hessian and Offset uncertainty estimation. Compare ZEUS/H1 using the same analysis ... The combination is a Hessian fit which fits the systematic uncertainty ...
Convolute PDFs with coefficient functions to give structure functions and hence cross-sections ... Then convolute with PDFs to produce fast prediction for cross ...
HESSIAN vs OFFSET method. PDF4LHC February ... In a fit to just ZEUS data. Model dependence in Hessian and Offset fits- comparing ZEUS and H1 ... Pragmatism. ...