Changeset View
Changeset View
Standalone View
Standalone View
src/LauKMatrixProdPole.cc
| Show All 22 Lines | |||||
| */ | */ | ||||
| /*! \file LauKMatrixProdPole.cc | /*! \file LauKMatrixProdPole.cc | ||||
| \brief File containing implementation of LauKMatrixProdPole class. | \brief File containing implementation of LauKMatrixProdPole class. | ||||
| */ | */ | ||||
| #include "LauKMatrixProdPole.hh" | #include "LauKMatrixProdPole.hh" | ||||
| #include "LauKMatrixPropagator.hh" | #include "LauKMatrixPropagator.hh" | ||||
| #include "LauResonanceMaker.hh" | |||||
| #include <iostream> | #include <iostream> | ||||
| ClassImp(LauKMatrixProdPole) | ClassImp(LauKMatrixProdPole) | ||||
| LauKMatrixProdPole::LauKMatrixProdPole(const TString& poleName, Int_t poleIndex, Int_t resPairAmpInt, | LauKMatrixProdPole::LauKMatrixProdPole( const TString& poleName, Int_t poleIndex, Int_t resPairAmpInt, | ||||
| LauKMatrixPropagator* propagator, const LauDaughters* daughters, | LauKMatrixPropagator* propagator, const LauDaughters* daughters, | ||||
| Bool_t useProdAdler) : | Bool_t useProdAdler) : | ||||
| LauAbsResonance(poleName, resPairAmpInt, daughters), | LauAbsResonance( poleName, resPairAmpInt, daughters, propagator->getL(propagator->getIndex()) ), | ||||
| thePropagator_(propagator), | thePropagator_(propagator), | ||||
| poleIndex_(poleIndex - 1), // poleIndex goes from 1 to nPoles | poleIndex_(poleIndex - 1), // poleIndex goes from 1 to nPoles | ||||
| useProdAdler_(useProdAdler) | useProdAdler_(useProdAdler) | ||||
| { | { | ||||
| if (useProdAdler_) { | if (useProdAdler_) { | ||||
| std::cout<<"Creating K matrix production pole "<<poleName<<" with poleIndex = " | std::cout <<"Creating K matrix production pole "<<poleName<<" with poleIndex = " | ||||
| <<poleIndex<<" with s-dependent production Adler zero term"<<std::endl; | <<poleIndex<<" with s-dependent production Adler zero term"<<std::endl; | ||||
| } else { | } else { | ||||
| std::cout<<"Creating K matrix production pole "<<poleName<<" with poleIndex = " | std::cout <<"Creating K matrix production pole "<<poleName<<" with poleIndex = " | ||||
| <<poleIndex<<" with production Adler zero factor = 1"<<std::endl; | <<poleIndex<<" with production Adler zero factor = 1"<<std::endl; | ||||
| } | } | ||||
| // `Resonance' Blatt-Weisskopf factor is handled internally, but parent must be set here. For other lineshapes, LauResonanceMaker handles this. | |||||
| this->setBarrierRadii( nullptr,LauResonanceMaker::get().getParentBWFactor( propagator->getL(propagator->getIndex()), LauBlattWeisskopfFactor::BWBarrier ) ); | |||||
| } | } | ||||
| LauKMatrixProdPole::~LauKMatrixProdPole() | LauKMatrixProdPole::~LauKMatrixProdPole() | ||||
| { | { | ||||
| } | } | ||||
| LauComplex LauKMatrixProdPole::resAmp(Double_t mass, Double_t spinTerm) | LauComplex LauKMatrixProdPole::resAmp(const Double_t mass, const Double_t spinTerm) | ||||
| { | { | ||||
| std::cerr << "ERROR in LauKMatrixProdPole::resAmp : This method shouldn't get called." << std::endl; | |||||
| std::cerr << " Returning zero amplitude for mass = " << mass << " and spinTerm = " << spinTerm << "." << std::endl; | |||||
| return LauComplex(0.0, 0.0); | |||||
| } | |||||
| LauComplex LauKMatrixProdPole::amplitude(const LauKinematics* kinematics) | |||||
| { | |||||
| // Calculate the amplitude for the K-matrix production pole. | // Calculate the amplitude for the K-matrix production pole. | ||||
| LauComplex amp(0.0, 0.0); | LauComplex amp(0.0, 0.0); | ||||
| if (thePropagator_ == 0) { | if (thePropagator_ == 0) { | ||||
| std::cerr << "ERROR in LauKMatrixProdPole::amplitude : The propagator is null" << std::endl; | std::cerr << "ERROR in LauKMatrixProdPole::amplitude : The propagator is null" << std::endl; | ||||
| return amp; | return amp; | ||||
| } | } | ||||
| thePropagator_->updatePropagator(kinematics); | // Get barrier factors ('resonance' factor is already accounted for internally via propagator 'Gamma' matrix) | ||||
| Double_t fFactorB(1.0); | |||||
| const Int_t resSpin = this->getSpin(); | |||||
| const Double_t pstar = this->getPstar(); | |||||
| if ( resSpin > 0 ) { | |||||
| const LauBlattWeisskopfFactor* parBWFactor = this->getParBWFactor(); | |||||
| if ( parBWFactor != nullptr ) { | |||||
johndan: @jback, here I assume the 0th channel is the one for which the amplitude is requested. This… | |||||
Done Inline ActionsWell, you could have the case where the first channel has L = 0, but others have L > 0. So we should check if the propagator has any non-zero L channels, perhaps by returning a cached boolean that keeps track of this condition at initialisation. Do we need to include the resBWFactor? I thought this was already in the "D" matrices (denominator terms involving q, a and R). jback: Well, you could have the case where the first channel has L = 0, but others have L > 0. So we… | |||||
Done Inline ActionsOn the first point, I don't think it matters if other channels have L>0 does it? Why do we need to track it? On the second, I think you're spot on - the resBWFactor has been dropped as you say. johndan: On the first point, I don't think it matters if other channels have L>0 does it? Why do we need… | |||||
Done Inline ActionsYes, we don't need to track this since we have changed how the angular dependence is included. jback: Yes, we don't need to track this since we have changed how the angular dependence is included. | |||||
| switch ( parBWFactor->getRestFrame() ) { | |||||
| case LauBlattWeisskopfFactor::ResonanceFrame: | |||||
| fFactorB = parBWFactor->calcFormFactor(this->getP()); | |||||
| break; | |||||
| case LauBlattWeisskopfFactor::ParentFrame: | |||||
| fFactorB = parBWFactor->calcFormFactor(pstar); | |||||
| break; | |||||
| case LauBlattWeisskopfFactor::Covariant: | |||||
| { | |||||
| Double_t covFactor = this->getCovFactor(); | |||||
| if ( resSpin > 2 ) { | |||||
| covFactor = TMath::Power( covFactor, 1.0/resSpin ); | |||||
| } else if ( resSpin == 2 ) { | |||||
| covFactor = TMath::Sqrt( covFactor ); | |||||
| } | |||||
| fFactorB = parBWFactor->calcFormFactor(pstar*covFactor); | |||||
| break; | |||||
| } | |||||
| } | |||||
| } | |||||
| } | |||||
| // Make sure the K-matrix propagator is up-to-date for | |||||
| // the given centre-of-mass squared value ("s") | |||||
| thePropagator_->updatePropagator(mass*mass); | |||||
| // Sum the pole denominator terms over all channels j, multiplying by | // Sum the pole denominator terms over all channels j, multiplying by | ||||
| // the propagator terms. Note that we do not sum over poles, since we | // the propagator terms. Note that we do not sum over poles, since we | ||||
| // only want one of the production pole terms. | // only want one of the production pole terms. | ||||
| Int_t nChannels = thePropagator_->getNChannels(); | Int_t nChannels = thePropagator_->getNChannels(); | ||||
| Int_t jChannel; | Int_t jChannel; | ||||
| for (jChannel = 0; jChannel < nChannels; jChannel++) { | for (jChannel = 0; jChannel < nChannels; jChannel++) { | ||||
| Show All 10 Lines | LauComplex LauKMatrixProdPole::resAmp(const Double_t mass, const Double_t spinTerm) | ||||
| Double_t poleDenom = thePropagator_->getPoleDenomTerm(poleIndex_); | Double_t poleDenom = thePropagator_->getPoleDenomTerm(poleIndex_); | ||||
| // Include Adler zero factor if requested | // Include Adler zero factor if requested | ||||
| Double_t adlerZero(1.0); | Double_t adlerZero(1.0); | ||||
| if (useProdAdler_) {adlerZero = thePropagator_->getAdlerZero();} | if (useProdAdler_) {adlerZero = thePropagator_->getAdlerZero();} | ||||
| amp.rescale(poleDenom*adlerZero); | amp.rescale(poleDenom*adlerZero); | ||||
| // Scale by the spin term | |||||
| Double_t scale = spinTerm; | |||||
| // Include Blatt-Weisskopf barrier factor for parent | |||||
| scale *= fFactorB; | |||||
| amp.rescale(scale); | |||||
| return amp; | return amp; | ||||
| } | } | ||||
| const std::vector<LauParameter*>& LauKMatrixProdPole::getFloatingParameters() | const std::vector<LauParameter*>& LauKMatrixProdPole::getFloatingParameters() | ||||
| { | { | ||||
| this->clearFloatingParameters(); | this->clearFloatingParameters(); | ||||
| Int_t nChannels = thePropagator_->getNChannels(); | Int_t nChannels = thePropagator_->getNChannels(); | ||||
| for (int jChannel = 0 ; jChannel < nChannels ; jChannel++) | for (int jChannel = 0 ; jChannel < nChannels ; jChannel++) | ||||
| { | { | ||||
| LauParameter& par_gj_ = thePropagator_->getCouplingParameter(poleIndex_, jChannel); | LauParameter& par_gj_ = thePropagator_->getCouplingParameter(poleIndex_, jChannel); | ||||
| if ( !par_gj_.fixed() ) | if ( !par_gj_.fixed() ) | ||||
| { | { | ||||
| this->addFloatingParameter( &par_gj_ ); | this->addFloatingParameter( &par_gj_ ); | ||||
| } | } | ||||
| } | } | ||||
Done Inline ActionsBraces have gone missing tlatham: Braces have gone missing | |||||
| LauParameter& par_polemasssq_ = thePropagator_->getPoleMassSqParameter(poleIndex_); | LauParameter& par_polemasssq_ = thePropagator_->getPoleMassSqParameter(poleIndex_); | ||||
| if ( !par_polemasssq_.fixed() ) | if ( !par_polemasssq_.fixed() ) | ||||
| { | { | ||||
| this->addFloatingParameter( &par_polemasssq_ ); | this->addFloatingParameter( &par_polemasssq_ ); | ||||
| } | } | ||||
| return this->getParameters(); | return this->getParameters(); | ||||
| } | } | ||||
| No newline at end of file | |||||
@jback, here I assume the 0th channel is the one for which the amplitude is requested. This assumption has precedence in your code, right?