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RooSpHarmonic.h
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1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitModels *
4 * File: $Id$
5 * Authors: *
6 * GR, Gerhard Raven, Nikhef & VU, Gerhard.Raven@nikhef.nl
7 * *
8 * Copyright (c) 2010, Nikhef & VU. All rights reserved.
9 * *
10 * Redistribution and use in source and binary forms, *
11 * with or without modification, are permitted according to the terms *
12 * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
13 *****************************************************************************/
14#ifndef ROO_SPHARMONIC
15#define ROO_SPHARMONIC
16
17#include "RooLegendre.h"
18#include "RooRealProxy.h"
19
20class RooSpHarmonic : public RooLegendre {
21public:
23 RooSpHarmonic(const char *name, const char *title, RooAbsReal& ctheta, RooAbsReal& phi, int l, int m);
24 RooSpHarmonic(const char *name, const char *title, RooAbsReal& ctheta, RooAbsReal& phi, int l1, int m1, int l2, int m2);
25
26 RooSpHarmonic(const RooSpHarmonic& other, const char* name = 0);
27 TObject* clone(const char* newname) const override { return new RooSpHarmonic(*this, newname); }
28 inline ~RooSpHarmonic() override { }
29
30 Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=nullptr) const override ;
31 double analyticalIntegral(Int_t code, const char* rangeName=nullptr) const override ;
32
33 Int_t getMaxVal( const RooArgSet& vars) const override;
34 double maxVal( Int_t code) const override;
35
36private:
38 double _n;
40
41 double evaluate() const override;
42
43 ClassDefOverride(RooSpHarmonic,1) // SpHarmonic polynomial
44};
45
46#endif
#define ClassDefOverride(name, id)
Definition: Rtypes.h:339
char name[80]
Definition: TGX11.cxx:110
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:62
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:56
Compute the associated Legendre polynomials using ROOT::Math::assoc_legendre().
Definition: RooLegendre.h:20
Implementation of the so-called real spherical harmonics, using the orthonormal normalization,...
Definition: RooSpHarmonic.h:20
~RooSpHarmonic() override
Definition: RooSpHarmonic.h:28
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=nullptr) const override
TODO: check that phi.max - phi.min = 2 pi... ctheta.max = +1, and ctheta.min = -1 we don't support in...
RooRealProxy _phi
Definition: RooSpHarmonic.h:37
Int_t getMaxVal(const RooArgSet &vars) const override
Advertise capability to determine maximum value of function for given set of observables.
double maxVal(Int_t code) const override
Return maximum value for set of observables identified by code assigned in getMaxVal.
double evaluate() const override
Note: P_0^0 = 1, so P_l^m = P_l^m P_0^0.
double analyticalIntegral(Int_t code, const char *rangeName=nullptr) const override
this was verified to match mathematica for l1 in [0,2], m1 in [0,l1], l2 in [l1,4],...
TObject * clone(const char *newname) const override
Definition: RooSpHarmonic.h:27
Mother of all ROOT objects.
Definition: TObject.h:37
static constexpr double m2
TMarker m
Definition: textangle.C:8
TLine l
Definition: textangle.C:4