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File indexing completed on 2025-08-03 08:13:03
0001 #ifndef EpInfo_H 0002 #define EpInfo_H 0003 0004 #define _EpOrderMax 3 // maximum order of EP to worry about. 0005 0006 #include "TVector2.h" 0007 0008 /// the class EpInfo has only public members. 0009 /// No need to hide information. Indeed, it's really only a struct, 0010 /// with the possibility to create some methods. 0011 class EpInfo{ 0012 0013 // making EpFinder a "friend class" just gives it direct access to the arrays. 0014 // But the general User is required to use accessors, since the numbering/index convention can be confusing 0015 friend class EpFinder; 0016 0017 public: 0018 EpInfo(); 0019 ~EpInfo(){/* no op */}; 0020 0021 // in the below, when it says "of order," then "order" begins at 1. E.g. order=2 means second-order q vector 0022 0023 //----------------------------------------------------------------------------------------- 0024 /// Raw (no phi-weighting) Q vector 0025 /// \parameter order order of the Q-vector. Begins at unity (order=1 means first-order Q) 0026 TVector2 RawQ(int order); 0027 0028 //----------------------------------------------------------------------------------------- 0029 /// Phi weighted Q vector 0030 /// \parameter order order of the Q-vector. Begins at unity (order=1 means first-order Q) 0031 TVector2 PhiWeightedQ(int order); 0032 0033 //----------------------------------------------------------------------------------------- 0034 /// Raw (no phi-weighting, no shifting) Event plane angle 0035 /// \parameter order order of the Q-vector. Begins at unity (order=1 means first-order Q) 0036 double RawPsi(int order); 0037 0038 //----------------------------------------------------------------------------------------- 0039 /// Phi-weighted (but not shift flattened) Event plane angle 0040 /// \parameter order order of the Q-vector. Begins at unity (order=1 means first-order Q) 0041 double PhiWeightedPsi(int order); 0042 0043 //----------------------------------------------------------------------------------------- 0044 /// Phi-weighted and shift-corrected Event plane angle 0045 /// \parameter order order of the Q-vector. Begins at unity (order=1 means first-order Q) 0046 double PhiWeightedAndShiftedPsi(int order); 0047 0048 //----------------------------------------------------------------------------------------- 0049 /// The sum of weights used to calculate Q-vector, for entire detector. This is RAW, not phi-weighted 0050 /// This is useful if one wants to un-normalize the Q-vector 0051 /// ** note that this depends on "order," because the eta-weighting or ring-weighting can depend on order (user sets it) 0052 /// ** this stands in contrast to the ring-by-ring Qvectors, which do not depend on order. 0053 /// \parameter order order of the EP. Begins at unity (order=1 means first-order EP) 0054 double SWRaw(int order); 0055 0056 //----------------------------------------------------------------------------------------- 0057 /// The sum of weights used to calculate Q-vector, for entire detector. This is phi-weighted 0058 /// This is useful if one wants to un-normalize the Q-vector 0059 /// ** note that this depends on "order," because the eta-weighting or ring-weighting can depend on order (user sets it) 0060 /// ** this stands in contrast to the ring-by-ring Qvectors, which do not depend on order. 0061 /// \parameter order order of the EP. Begins at unity (order=1 means first-order EP) 0062 double SWPhiWeighted(int order); 0063 0064 private: 0065 0066 bool ArgumentOutOfBounds(int order); /// protection against user selecting "order=0" or order that has not been defined 0067 0068 double Range(double psi, int order); /// puts angle psi into range (0,2pi/n) 0069 0070 double QrawOneSide[_EpOrderMax][2]; /// indices: [order][x,y] 0071 double QphiWeightedOneSide[_EpOrderMax][2]; /// indices: [order][x,y] 0072 double PsiRaw[_EpOrderMax]; /// indices: [order] 0073 double PsiPhiWeighted[_EpOrderMax]; /// indices: [order] 0074 double PsiPhiWeightedAndShifted[_EpOrderMax]; /// indices: [order] 0075 double WheelSumWeightsRaw[_EpOrderMax]; /// indices: [order] 0076 double WheelSumWeightsPhiWeighted[_EpOrderMax]; /// indices: [order] 0077 0078 }; 0079 0080 #endif
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