pt c=psig_slope ] = 0.818731
    RooGaussian::mllSigPdf[ x=mll mean=msig_mean sigma=msig_sigma ] = 1
    RooEfficiency::effSigPdf[ cat=cut effFunc=effSig ] = 0.899817
      RooFormulaVar::effSig[ actualVars=(pt,as,ms,ss) formula="0.5*@1*(1+TMath::Erf((@0-@2)/@3))" ] = 0.899817
  RooProdPdf::bkg[ ptBkgPdf * mllBkgPdf * effBkgPdf|pt ] = 0.267845
    RooExponential::ptBkgPdf[ x=pt c=pbkg_slope ] = 0.449329
    RooPolynomial::mllBkgPdf[ x=mll coefList=(mbkg_slope) ] = 0.775
    RooEfficiency::effBkgPdf[ cat=cut