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D108.1759171173.diff
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diff --git a/EvtGenBase/EvtTensorParticle.hh b/EvtGenBase/EvtTensorParticle.hh
--- a/EvtGenBase/EvtTensorParticle.hh
+++ b/EvtGenBase/EvtTensorParticle.hh
@@ -24,6 +24,8 @@
#include "EvtGenBase/EvtParticle.hh"
#include "EvtGenBase/EvtTensor4C.hh"
+#include <array>
+
class EvtTensorParticle : public EvtParticle {
public:
EvtTensorParticle() = default;
@@ -42,7 +44,7 @@
double gamma ) const override;
private:
- EvtTensor4C eps[5]; //eps1,eps2,eps3,eps4,eps5;
+ std::array<EvtTensor4C, 5> eps; //eps1,eps2,eps3,eps4,eps5;
EvtTensorParticle( const EvtTensorParticle& tensor );
EvtTensorParticle& operator=( const EvtTensorParticle& tensor );
diff --git a/EvtGenBase/EvtVectorParticle.hh b/EvtGenBase/EvtVectorParticle.hh
--- a/EvtGenBase/EvtVectorParticle.hh
+++ b/EvtGenBase/EvtVectorParticle.hh
@@ -25,6 +25,9 @@
#include "EvtGenBase/EvtVector4C.hh"
#include "EvtGenBase/EvtVector4R.hh"
+#include <array>
+#include <cassert>
+
class EvtId;
class EvtVectorParticle : public EvtParticle {
@@ -37,15 +40,22 @@
const EvtVector4C&, const EvtVector4C& );
EvtVector4C epsParent( int i ) const override
{
+ assert( i >= 0 && i < _eps.size() );
+
return boostTo( _eps[i], this->getP4() );
}
- EvtVector4C eps( int i ) const override { return _eps[i]; }
+ EvtVector4C eps( int i ) const override
+ {
+ assert( i >= 0 && i < _eps.size() );
+
+ return _eps[i];
+ }
EvtSpinDensity rotateToHelicityBasis() const override;
EvtSpinDensity rotateToHelicityBasis( double alpha, double beta,
double gamma ) const override;
private:
- EvtVector4C _eps[3];
+ std::array<EvtVector4C, 3> _eps;
EvtVectorParticle( const EvtVectorParticle& vector );
EvtVectorParticle& operator=( const EvtVectorParticle& vector );
diff --git a/History.md b/History.md
--- a/History.md
+++ b/History.md
@@ -17,6 +17,9 @@
Updated EvtPhiDalitz model to use helicity amplitudes and fixed the indices used in
EvtVector3R::dot(), courtesy of Arnau Brossa Gonzalo & Antonio Romero Vidal (LHCb).
+2 Feb 2024 Fernando Abudinen
+* D108: Bugfix protect polarisation vector for vector and tensor particles against wrong indices
+
31 Oct 2023 Fernando Abudinen
* D102: Bugfix probmax issue for X38722-+\_PSI\_GAMMA model
- Calculation of amplitude moved to dedicated calcAmp function and fixed initialisation.
diff --git a/src/EvtGenBase/EvtTensorParticle.cpp b/src/EvtGenBase/EvtTensorParticle.cpp
--- a/src/EvtGenBase/EvtTensorParticle.cpp
+++ b/src/EvtGenBase/EvtTensorParticle.cpp
@@ -27,6 +27,7 @@
#include "EvtGenBase/EvtVector4C.hh"
#include "EvtGenBase/EvtVector4R.hh"
+#include <cassert>
#include <iostream>
#include <math.h>
#include <stdlib.h>
@@ -84,15 +85,15 @@
EvtTensor4C EvtTensorParticle::epsTensorParent( int i ) const
{
- EvtTensor4C temp = eps[i];
+ assert( i >= 0 && i < eps.size() );
- temp.applyBoostTo( this->getP4() );
- return temp;
+ return boostTo( eps[i], this->getP4() );
} //epsParent
EvtTensor4C EvtTensorParticle::epsTensor( int i ) const
{
+ assert( i >= 0 && i < eps.size() );
return eps[i];
} //eps
diff --git a/src/EvtGenModels/EvtBcToNPi.cpp b/src/EvtGenModels/EvtBcToNPi.cpp
--- a/src/EvtGenModels/EvtBcToNPi.cpp
+++ b/src/EvtGenModels/EvtBcToNPi.cpp
@@ -301,7 +301,7 @@
2 * I * FV * dual( EvtGenFunctions::directProd( p, k ) );
EvtVector4C Heps = H.cont2( hardCur );
- for ( int i = 0; i < 4; i++ ) {
+ for ( int i = 0; i < 3; i++ ) {
EvtVector4C eps = root_particle->getDaug( 0 )
->epsParent( i )
.conj(); // psi-meson polarization vector
diff --git a/src/EvtGenModels/EvtBcVNpi.cpp b/src/EvtGenModels/EvtBcVNpi.cpp
--- a/src/EvtGenModels/EvtBcVNpi.cpp
+++ b/src/EvtGenModels/EvtBcVNpi.cpp
@@ -183,7 +183,7 @@
H.addDirProd( ( a0f - a3f ) * 2.0 * ( m_meson / Q2 ) * p4b, p4b - p4meson );
EvtVector4C Heps = H.cont2( hardCur );
- for ( int i = 0; i < 4; i++ ) {
+ for ( int i = 0; i < 3; i++ ) {
EvtVector4C eps = root_particle->getDaug( 0 )
->epsParent( i )
.conj(); // psi-meson polarization vector

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