doc/master/rf513__wsfactory__tools_8C.html

#include "RooRealVar.h"

#include "RooDataSet.h"

#include "RooGaussian.h"

#include "RooChebychev.h"

#include "RooAddPdf.h"

#include "RooWorkspace.h"

#include "RooPlot.h"

#include "TCanvas.h"

#include "TAxis.h"

using namespace RooFit;


void rf513_wsfactory_tools()

{

   RooWorkspace *w = new RooWorkspace("w");


   // B u i l d   a   c o m p l e x   e x a m p l e   p . d . f .

   // -----------------------------------------------------------


   // Make signal model for CPV: A bmixing decay function in t (convoluted with a triple Gaussian resolution model)

   //                            times a Gaussian function the reconstructed mass

   w->factory("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::gm({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]}),"

              "DoubleSided ),"

              "Gaussian::sig_m( mes[5.20,5.30], mB0[5.20,5.30], sigmB0[0.01,0.05] ))");


   // Make background component: A plain decay function in t times an Argus function in the reconstructed mass

   w->factory("PROD::bkg(  Decay::bkg_t( dt, tau, gm, DoubleSided),"

              "ArgusBG::bkg_m( mes, 5.291, k[-100,-10]))");


   // Make composite model from the signal and background component

   w->factory("SUM::model( Nsig[5000,0,10000]*sig, NBkg[500,0,10000]*bkg )");


   // E x a m p l e   o f   R o o S i m W S T o o l   i n t e r f a c e

   // ------------------------------------------------------------------


   // Introduce a flavour tagging category tagCat as observable with 4 states corresponding

   // to 4 flavour tagging techniques with different performance that require different

   // parameterizations of the fit model

   //

   // RooSimWSTool operation:

   //     - Make 4 clones of model (for each tagCat) state, that will gain an individual

   //       copy of parameters w,dw and biasC. The other parameters remain common

   //     - Make a simultaneous pdf of the 4 clones assigning each to the appropriate

   //       state of the tagCat index category


   // RooSimWSTool is interfaced as meta-type SIMCLONE in the factory. The $SplitParam()

   // argument maps to the SplitParam() named argument in the RooSimWSTool constructor

   w->factory("SIMCLONE::model_sim( model, $SplitParam({w,dw,biasC},tagCat[Lep,Kao,NT1,NT2]))");


   // E x a m p l e   o f   R o o C u s t o m i z e r   i n t e r f a c e

   // -------------------------------------------------------------------

   //

   // Class RooCustomizer makes clones of existing pdfs with certain prescribed

   // modifications (branch of leaf node replacements)

   //

   // Here we take our model (the original before RooSimWSTool modifications)

   // and request that the parameter w (the mistag rate) is replaced with

   // an expression-based function that calculates w in terms of the Dilution

   // parameter D that is defined as D = 1-2*w


   // Make a clone model_D of original 'model' replacing 'w' with 'expr('0.5-D/2',D[0,1])'

   w->factory("EDIT::model_D(model, w=expr('0.5-D/2',D[0,1]) )");


   // Print workspace contents

   w->Print();


   // Make workspace visible on command line

   gDirectory->Add(w);

}

RooAddPdf.h

RooChebychev.h

RooDataSet.h

RooGaussian.h

RooPlot.h

RooRealVar.h

RooWorkspace.h

TAxis.h

TCanvas.h

gDirectory
#define gDirectory
Definition TDirectory.h:384

w
winID w
Definition TGWin32VirtualGLProxy.cxx:39

RooWorkspace
Persistable container for RooFit projects.
Definition RooWorkspace.h:43

RooFit
The namespace RooFit contains mostly switches that change the behaviour of functions of PDFs (or othe...
Definition CodegenImpl.h:64

rf513_wsfactory_tools
Definition rf513_wsfactory_tools.py:1