ample:

<pre>
  "PROD::sig(BMixDecay::sig_t( dt[-20,20], mixState[mixed=1,unmix=-1], tagFlav[B0=1,B0bar=-1],
                                             tau[1.54], dm[0.472], w[0.05], dw[0],
                                             AddModel({GaussModel(dt,biasC[-10,10],sigmaC[0.1,3],dterr[0.01,0.2]),
                                                       GaussModel(dt,0,sigmaT[3,10]),
                                                       GaussModel(dt,0,20)},{fracC[0,1],fracT[0,1]}),
                 