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src/LauKMatrixProdSVP.cc
| Show All 27 Lines | |||||
| #include "LauKMatrixProdSVP.hh" | #include "LauKMatrixProdSVP.hh" | ||||
| #include "LauKMatrixPropagator.hh" | #include "LauKMatrixPropagator.hh" | ||||
| #include <iostream> | #include <iostream> | ||||
| ClassImp(LauKMatrixProdSVP) | ClassImp(LauKMatrixProdSVP) | ||||
| LauKMatrixProdSVP::LauKMatrixProdSVP(const TString& SVPName, Int_t channelIndex, Int_t resPairAmpInt, | LauKMatrixProdSVP::LauKMatrixProdSVP( const TString& SVPName, Int_t channelIndex, Int_t resPairAmpInt, | ||||
| LauKMatrixPropagator* propagator, const LauDaughters* daughters, | LauKMatrixPropagator* propagator, const LauDaughters* daughters, | ||||
| Bool_t useProdAdler) : | Bool_t useProdAdler) : | ||||
| LauAbsResonance(SVPName, resPairAmpInt, daughters), | LauAbsResonance( SVPName, resPairAmpInt, daughters, propagator->getL(propagator->getIndex()) ), | ||||
| thePropagator_(propagator), | thePropagator_(propagator), | ||||
| channelIndex_(channelIndex - 1), // channelIndex goes from 1 to nChannels. | channelIndex_(channelIndex - 1), // channelIndex goes from 1 to nChannels. | ||||
| useProdAdler_(useProdAdler) | useProdAdler_(useProdAdler) | ||||
| { | { | ||||
| // Constructor | // Constructor | ||||
| if (useProdAdler_) { | if (useProdAdler_) { | ||||
| std::cout<<"Creating K matrix production SVP "<<SVPName<<" with channelIndex = " | std::cout <<"Creating K matrix production SVP "<<SVPName<<" with channelIndex = " | ||||
| <<channelIndex<<" with s-dependent production Adler zero term"<<std::endl; | <<channelIndex<<" with s-dependent production Adler zero term"<<std::endl; | ||||
| } else { | } else { | ||||
| std::cout<<"Creating K matrix production SVP "<<SVPName<<" with channelIndex = " | std::cout <<"Creating K matrix production SVP "<<SVPName<<" with channelIndex = " | ||||
| <<channelIndex<<" with production Adler zero factor = 1"<<std::endl; | <<channelIndex<<" with production Adler zero factor = 1"<<std::endl; | ||||
| } | } | ||||
| } | } | ||||
| LauKMatrixProdSVP::~LauKMatrixProdSVP() | LauKMatrixProdSVP::~LauKMatrixProdSVP() | ||||
| { | { | ||||
| // Destructor | // Destructor | ||||
| } | } | ||||
| LauComplex LauKMatrixProdSVP::resAmp(Double_t mass, Double_t spinTerm) | LauComplex LauKMatrixProdSVP::resAmp(Double_t mass, Double_t spinTerm) | ||||
| { | { | ||||
| std::cerr << "ERROR in LauKMatrixProdSVP::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 LauKMatrixProdSVP::amplitude(const LauKinematics* kinematics) | |||||
| { | |||||
| // Calculate the amplitude for the K-matrix production pole. | // Calculate the amplitude for the K-matrix production pole. | ||||
| // First, make sure the K-matrix propagator is up-to-date for | // First, make sure the K-matrix propagator is up-to-date for | ||||
| // the given centre-of-mass squared value ("s") from the kinematics. | // the given centre-of-mass squared value ("s") from the kinematics. | ||||
| LauComplex amp(0.0, 0.0); | LauComplex amp(0.0, 0.0); | ||||
| if (thePropagator_ == 0) { | if (thePropagator_ == 0) { | ||||
| std::cerr << "ERROR in LauKMatrixProdSVP::amplitude : The propagator is null" << std::endl; | std::cerr << "ERROR in LauKMatrixProdSVP::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 ) { | |||||
| 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; | |||||
| } | |||||
| } | |||||
| } | |||||
| } | |||||
| thePropagator_->updatePropagator(mass*mass); | |||||
| Double_t SVPTerm = thePropagator_->getProdSVPTerm(); | Double_t SVPTerm = thePropagator_->getProdSVPTerm(); | ||||
| amp = thePropagator_->getPropTerm(channelIndex_); | amp = thePropagator_->getPropTerm(channelIndex_); | ||||
| // 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(SVPTerm*adlerZero); | amp.rescale(SVPTerm*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*>& LauKMatrixProdSVP::getFloatingParameters() | |||||
| { | |||||
| this->clearFloatingParameters(); | |||||
| Int_t nChannels = thePropagator_->getNChannels(); | |||||
| for (int jChannel = 0 ; jChannel < nChannels ; jChannel++) | |||||
| { | |||||
| LauParameter& par_f_ = thePropagator_->getScatteringParameter(channelIndex_, jChannel); | |||||
| if ( !par_f_.fixed() ) | |||||
| this->addFloatingParameter( &par_f_ ); | |||||
| } | |||||
| LauParameter& par_s0Prod_ = thePropagator_->gets0Prod(); | |||||
| if ( !par_s0Prod_.fixed() ) | |||||
| { | |||||
| this->addFloatingParameter( &par_s0Prod_ ); | |||||
| } | |||||
| return this->getParameters(); | |||||
| } | |||||
| No newline at end of file | |||||