| 1 |
#ifndef Alignment_TwoBodyDecay_TwoBodyDecayDerivatives_h
|
| 2 |
#define Alignment_TwoBodyDecay_TwoBodyDecayDerivatives_h
|
| 3 |
|
| 4 |
#include "Alignment/TwoBodyDecay/interface/TwoBodyDecay.h"
|
| 5 |
|
| 6 |
/** /class TwoBodyDecayDerivatives
|
| 7 |
*
|
| 8 |
* This class provides the derivatives matrices need by the class TwoBodyDecayEstimator.
|
| 9 |
*
|
| 10 |
* /author Edmund Widl
|
| 11 |
*/
|
| 12 |
|
| 13 |
|
| 14 |
class TwoBodyDecayDerivatives
|
| 15 |
{
|
| 16 |
|
| 17 |
public:
|
| 18 |
|
| 19 |
enum { dimension = 6 };
|
| 20 |
|
| 21 |
enum DerivativeParameterName { px = 1, py = 2, pz = 3, theta = 4, phi = 5, mass = 6 };
|
| 22 |
|
| 23 |
TwoBodyDecayDerivatives( double mPrimary = 91.1876, double mSecondary = 0.105658 );
|
| 24 |
~TwoBodyDecayDerivatives();
|
| 25 |
|
| 26 |
/**Derivatives of the lab frame momenta (in cartesian representation) of the secondaries
|
| 27 |
* w.r.t. z=(px,py,pz,theta,phi,m).
|
| 28 |
*/
|
| 29 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > derivatives( const TwoBodyDecay & tbd ) const;
|
| 30 |
|
| 31 |
/**Derivatives of the lab frame momenta (in cartesian representation) of the secondaries
|
| 32 |
* w.r.t. z=(px,py,pz,theta,phi,m).
|
| 33 |
*/
|
| 34 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > derivatives( const TwoBodyDecayParameters & param ) const;
|
| 35 |
|
| 36 |
/**Derivatives of the lab frame momenta (in cartesian representation) of the secondaries
|
| 37 |
* w.r.t. the selected parameters.
|
| 38 |
*/
|
| 39 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > selectedDerivatives( const TwoBodyDecay & tbd,
|
| 40 |
const std::vector< bool > & selector ) const;
|
| 41 |
|
| 42 |
/**Derivatives of the lab frame momenta (in cartesian representation) of the secondaries
|
| 43 |
* w.r.t. the selected parameters.
|
| 44 |
*/
|
| 45 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > selectedDerivatives( const TwoBodyDecayParameters & param,
|
| 46 |
const std::vector< bool > & selector ) const;
|
| 47 |
|
| 48 |
private:
|
| 49 |
|
| 50 |
/**Derivatives of the lab frame momenta of the secondaries w.r.t. px of the primary particle.
|
| 51 |
*/
|
| 52 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > dqsdpx( const TwoBodyDecayParameters & param ) const;
|
| 53 |
|
| 54 |
/**Derivatives of the lab frame momenta of the secondaries w.r.t. py of the primary particle.
|
| 55 |
*/
|
| 56 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > dqsdpy( const TwoBodyDecayParameters & param ) const;
|
| 57 |
|
| 58 |
/**Derivatives of the lab frame momenta of the secondaries w.r.t. pz of the primary particle.
|
| 59 |
*/
|
| 60 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > dqsdpz( const TwoBodyDecayParameters & param ) const;
|
| 61 |
|
| 62 |
/**Derivatives of the lab frame momenta of the secondaries w.r.t. the decay angle theta in the primary's rest frame.
|
| 63 |
*/
|
| 64 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > dqsdtheta( const TwoBodyDecayParameters & param ) const;
|
| 65 |
|
| 66 |
/**Derivatives of the lab frame momenta of the secondaries w.r.t. the decay angle phi in the primary's rest frame.
|
| 67 |
*/
|
| 68 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > dqsdphi( const TwoBodyDecayParameters & param ) const;
|
| 69 |
|
| 70 |
/**Derivatives of the lab frame momenta of the secondaries w.r.t. the mass of the primary
|
| 71 |
*/
|
| 72 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > dqsdm( const TwoBodyDecayParameters & param ) const;
|
| 73 |
|
| 74 |
const std::pair< AlgebraicMatrix, AlgebraicMatrix > dqsdzi( const TwoBodyDecayParameters & param, const DerivativeParameterName & i ) const;
|
| 75 |
|
| 76 |
double thePrimaryMass;
|
| 77 |
double theSecondaryMass;
|
| 78 |
|
| 79 |
};
|
| 80 |
|
| 81 |
#endif
|
