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Commit | Line | Data |
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d88f97cc | 1 | #ifndef ALIBOOST_H |
2 | #define ALIBOOST_H | |
3da30618 | 3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
f531a546 | 6 | // $Id$ |
3da30618 | 7 | |
d88f97cc | 8 | #include <math.h> |
9 | ||
10 | #include "TObject.h" | |
11 | ||
12 | #include "Ali4Vector.h" | |
13 | ||
14 | class AliBoost : public TObject | |
15 | { | |
16 | public: | |
17 | AliBoost(); // Default constructor | |
c72198f1 | 18 | virtual ~AliBoost(); // Default destructor |
19 | AliBoost(AliBoost& b); // Copy constructor | |
20 | void SetBeta(Ali3Vector& b); // Set boost parameters by beta 3-vector | |
d88f97cc | 21 | void Set4Momentum(Ali4Vector& p); // Set boost parameters by 4-momentum |
22 | Ali3Vector GetBetaVector(); // Provide the beta 3-vector | |
23 | Double_t GetBeta(); // Provide norm of beta 3-vector | |
24 | Double_t GetGamma(); // Provide gamma value | |
84bb7c66 | 25 | void Data(TString f="car"); // Print boost parameter info in coord. frame f |
d88f97cc | 26 | Ali4Vector Boost(Ali4Vector& v); // Perform Lorentz boost on 4-vector v |
27 | Ali4Vector Inverse(Ali4Vector& v); // Perform inverse Lorentz boost on 4-vector v | |
959fbac5 | 28 | Double_t GetResultError(); // Provide error on scalar result |
d88f97cc | 29 | |
30 | protected: | |
959fbac5 | 31 | Ali3Vector fBeta; // The beta 3-vector |
32 | Double_t fGamma; // The gamma factor | |
33 | Double_t fDgamma; // Error on the gamma value | |
34 | Double_t fDresult; // Error on scalar result | |
d88f97cc | 35 | |
c72198f1 | 36 | ClassDef(AliBoost,3) // Perform various Lorentz transformations. |
d88f97cc | 37 | }; |
38 | #endif |