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RooUnblindCPAsymVar.cxx
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1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitModels *
4 * @(#)root/roofit:$Id$
5 * Authors: *
6 * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7 * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8 * *
9 * Copyright (c) 2000-2005, Regents of the University of California *
10 * and Stanford University. All rights reserved. *
11 * *
12 * Redistribution and use in source and binary forms, *
13 * with or without modification, are permitted according to the terms *
14 * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15 *****************************************************************************/
16
17/** \class RooUnblindCPAsymVar
18 \ingroup Roofit
19
20Implementation of BlindTools' CP asymmetry blinding method
21A RooUnblindCPAsymVar object is a real valued function
22object, constructed from a blind value holder and a
23set of unblinding parameters. When supplied to a PDF
24in lieu of a regular parameter, the blind value holder
25supplied to the unblinded objects will in a fit be minimized
26to blind value corresponding to the actual minimum of the
27parameter. The transformation is chosen such that the
28the error on the blind parameters is identical to that
29of the unblind parameter
30**/
31
32#include "RooArgSet.h"
33#include "RooUnblindCPAsymVar.h"
34
35
36////////////////////////////////////////////////////////////////////////////////
37/// Default constructor
38
42
43////////////////////////////////////////////////////////////////////////////////
44/// Constructor from a given RooAbsReal (to hold the blind value) and a set of blinding parameters
45
46RooUnblindCPAsymVar::RooUnblindCPAsymVar(const char *name, const char *title,
47 const char *blindString, RooAbsReal& cpasym)
48 : RooAbsHiddenReal(name,title),
49 _asym("asym","CP Asymmetry",this,cpasym),
50 _blindEngine(blindString)
51{
52}
53
54////////////////////////////////////////////////////////////////////////////////
55/// Constructor from a given RooAbsReal (to hold the blind value) and a set of blinding parameters
56
57RooUnblindCPAsymVar::RooUnblindCPAsymVar(const char *name, const char *title,
60 _asym("asym","CP Asymmetry",this,cpasym),
61 _blindEngine(blindString)
62{
63}
64
65////////////////////////////////////////////////////////////////////////////////
66/// Copy constructor
67
70 _asym("asym",this,other._asym),
71 _blindEngine(other._blindEngine)
72{
73}
74
75////////////////////////////////////////////////////////////////////////////////
76/// Copy constructor
77
81
82////////////////////////////////////////////////////////////////////////////////
83
85{
86 if (isHidden()) {
87 // Blinding active for this event
89 } else {
90 // Blinding not active for this event
91 return _asym ;
92 }
93}
char name[80]
Definition TGX11.cxx:110
A space to attach TBranches.
Base class for objects that want to hide their return value from interactive use, e....
bool isHidden() const
Abstract base class for objects that represent a real value and implements functionality common to al...
Definition RooAbsReal.h:59
double UnHideAsym(double AsymPrime) const
Implementation of BlindTools' CP asymmetry blinding method A RooUnblindCPAsymVar object is a real val...
~RooUnblindCPAsymVar() override
Copy constructor.
double evaluate() const override
Evaluate this PDF / function / constant. Needs to be overridden by all derived classes.
RooUnblindCPAsymVar()
Default constructor.