diff --git a/EvtGenModels/EvtEta2MuMuGamma.hh b/EvtGenModels/EvtEta2MuMuGamma.hh
deleted file mode 100644
index f0bf207..0000000
--- a/EvtGenModels/EvtEta2MuMuGamma.hh
+++ /dev/null
@@ -1,39 +0,0 @@
-
-/***********************************************************************
-* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
-* *
-* This file is part of EvtGen. *
-* *
-* EvtGen is free software: you can redistribute it and/or modify *
-* it under the terms of the GNU General Public License as published by *
-* the Free Software Foundation, either version 3 of the License, or *
-* (at your option) any later version. *
-* *
-* EvtGen is distributed in the hope that it will be useful, *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
-* GNU General Public License for more details. *
-* *
-* You should have received a copy of the GNU General Public License *
-* along with EvtGen. If not, see <https://www.gnu.org/licenses/>. *
-***********************************************************************/
-
-#ifndef EVTETA2MUMUGAMMA_HH
-#define EVTETA2MUMUGAMMA_HH
-
-#include "EvtGenBase/EvtDecayProb.hh"
-
-class EvtParticle;
-
-class EvtEta2MuMuGamma : public EvtDecayProb {
- public:
- std::string getName() override;
- EvtDecayBase* clone() override;
-
- void init() override;
- void initProbMax() override;
-
- void decay( EvtParticle* p ) override;
-};
-
-#endif
diff --git a/EvtGenModels/EvtPi0Dalitz.hh b/EvtGenModels/EvtPi0Dalitz.hh
index 53003d0..9a8bbee 100644
--- a/EvtGenModels/EvtPi0Dalitz.hh
+++ b/EvtGenModels/EvtPi0Dalitz.hh
@@ -1,39 +1,47 @@
/***********************************************************************
* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
* *
* This file is part of EvtGen. *
* *
* EvtGen is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* EvtGen is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with EvtGen. If not, see <https://www.gnu.org/licenses/>. *
***********************************************************************/
#ifndef EVTPI0DALITZ_HH
#define EVTPI0DALITZ_HH
#include "EvtGenBase/EvtDecayProb.hh"
class EvtParticle;
class EvtPi0Dalitz : public EvtDecayProb {
public:
std::string getName() override;
EvtDecayBase* clone() override;
void init() override;
void initProbMax() override;
void decay( EvtParticle* p ) override;
+
+ private:
+ double m_poleSize{ 0.00000002 };
+
+ // Following are rho mass and width, but in order to keep consistency
+ // with what was done before do not use data from particle table.
+ const double m_m0Sq{ 0.768 * 0.768 };
+ const double m_m0SqG0Sq{ m_m0Sq * 0.151 * 0.151 };
};
#endif
diff --git a/src/EvtGenModels/EvtEta2MuMuGamma.cpp b/src/EvtGenModels/EvtEta2MuMuGamma.cpp
deleted file mode 100644
index 1ec5d38..0000000
--- a/src/EvtGenModels/EvtEta2MuMuGamma.cpp
+++ /dev/null
@@ -1,107 +0,0 @@
-
-/***********************************************************************
-* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
-* *
-* This file is part of EvtGen. *
-* *
-* EvtGen is free software: you can redistribute it and/or modify *
-* it under the terms of the GNU General Public License as published by *
-* the Free Software Foundation, either version 3 of the License, or *
-* (at your option) any later version. *
-* *
-* EvtGen is distributed in the hope that it will be useful, *
-* but WITHOUT ANY WARRANTY; without even the implied warranty of *
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
-* GNU General Public License for more details. *
-* *
-* You should have received a copy of the GNU General Public License *
-* along with EvtGen. If not, see <https://www.gnu.org/licenses/>. *
-***********************************************************************/
-
-#include "EvtGenModels/EvtEta2MuMuGamma.hh"
-
-#include "EvtGenBase/EvtDiracSpinor.hh"
-#include "EvtGenBase/EvtGenKine.hh"
-#include "EvtGenBase/EvtPDL.hh"
-#include "EvtGenBase/EvtParticle.hh"
-#include "EvtGenBase/EvtPatches.hh"
-#include "EvtGenBase/EvtReport.hh"
-#include "EvtGenBase/EvtTensor4C.hh"
-#include "EvtGenBase/EvtVector4C.hh"
-
-#include <fstream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string>
-using std::fstream;
-
-std::string EvtEta2MuMuGamma::getName()
-{
- return "ETA2MUMUGAMMA";
-}
-
-EvtDecayBase* EvtEta2MuMuGamma::clone()
-{
- return new EvtEta2MuMuGamma;
-}
-
-void EvtEta2MuMuGamma::initProbMax()
-{
- setProbMax( 3.5 );
-}
-
-void EvtEta2MuMuGamma::init()
-{
- // check that there are 0 arguments
- checkNArg( 0 );
- checkNDaug( 3 );
-
- checkSpinParent( EvtSpinType::SCALAR );
-
- checkSpinDaughter( 0, EvtSpinType::DIRAC );
- checkSpinDaughter( 1, EvtSpinType::DIRAC );
- checkSpinDaughter( 2, EvtSpinType::PHOTON );
-}
-
-void EvtEta2MuMuGamma::decay( EvtParticle* p )
-{
- EvtParticle *ep, *em, *gamma;
- setWeight( p->initializePhaseSpace( getNDaug(), getDaugs(), false,
- 0.00000002, 0, 1 ) );
-
- ep = p->getDaug( 0 );
- em = p->getDaug( 1 );
- gamma = p->getDaug( 2 );
-
- // the next four lines generates events with a weight such that
- // the efficiency for selecting them is good. The parameter below of
- // 0.1 is the size of the peak at low q^2 (in arbitrary units).
- // The value of 0.1 is appropriate for muons.
- // when you use this remember to remove the cut on q^2!
-
- //ep em invariant mass^2
- double m2 = ( ep->getP4() + em->getP4() ).mass2();
- EvtVector4R q = ep->getP4() + em->getP4();
- //Just use the prob summed over spins...
-
- EvtTensor4C w, v;
-
- v = 2.0 * ( gamma->getP4() * q ) *
- EvtGenFunctions::directProd( q, gamma->getP4() ) -
- ( gamma->getP4() * q ) * ( gamma->getP4() * q ) * EvtTensor4C::g() -
- m2 * EvtGenFunctions::directProd( gamma->getP4(), gamma->getP4() );
-
- w = 4.0 * ( EvtGenFunctions::directProd( ep->getP4(), em->getP4() ) +
- EvtGenFunctions::directProd( em->getP4(), ep->getP4() ) -
- EvtTensor4C::g() *
- ( ep->getP4() * em->getP4() - ep->getP4().mass2() ) );
-
- double prob = ( real( cont( v, w ) ) ) / ( m2 * m2 );
- prob *= ( 1.0 / ( ( 0.768 * 0.768 - m2 ) * ( 0.768 * 0.768 - m2 ) +
- 0.768 * 0.768 * 0.151 * 0.151 ) );
-
- // EvtGenReport(EVTGEN_INFO,"EvtGen") << "prob is "<<prob<<endl;
- setProb( prob );
-
- return;
-}
diff --git a/src/EvtGenModels/EvtModelReg.cpp b/src/EvtGenModels/EvtModelReg.cpp
index a526176..6da8d16 100644
--- a/src/EvtGenModels/EvtModelReg.cpp
+++ b/src/EvtGenModels/EvtModelReg.cpp
@@ -1,348 +1,346 @@
/***********************************************************************
* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
* *
* This file is part of EvtGen. *
* *
* EvtGen is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* EvtGen is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with EvtGen. If not, see <https://www.gnu.org/licenses/>. *
***********************************************************************/
#include "EvtGenModels/EvtModelReg.hh"
#include "EvtGenBase/EvtModel.hh"
#include "EvtGenBase/EvtPDL.hh"
#include "EvtGenBase/EvtParticle.hh"
#include "EvtGenBase/EvtPatches.hh"
#include "EvtGenModels/EvtBBScalar.hh"
#include "EvtGenModels/EvtBHadronic.hh"
#include "EvtGenModels/EvtBLLNuL.hh"
#include "EvtGenModels/EvtBTo3piCP.hh"
#include "EvtGenModels/EvtBTo4piCP.hh"
#include "EvtGenModels/EvtBToDDalitzCPK.hh"
#include "EvtGenModels/EvtBToDiBaryonlnupQCD.hh"
#include "EvtGenModels/EvtBToKpipiCP.hh"
#include "EvtGenModels/EvtBToPlnuBK.hh"
#include "EvtGenModels/EvtBToVlnuBall.hh"
#include "EvtGenModels/EvtBaryonPCR.hh"
#include "EvtGenModels/EvtBcBsNPi.hh"
#include "EvtGenModels/EvtBcBsStarNPi.hh"
#include "EvtGenModels/EvtBcPsiNPi.hh"
#include "EvtGenModels/EvtBcSMuNu.hh"
#include "EvtGenModels/EvtBcTMuNu.hh"
#include "EvtGenModels/EvtBcToNPi.hh"
#include "EvtGenModels/EvtBcVHad.hh"
#include "EvtGenModels/EvtBcVMuNu.hh"
#include "EvtGenModels/EvtBcVNpi.hh"
#include "EvtGenModels/EvtBsMuMuKK.hh"
#include "EvtGenModels/EvtBsquark.hh"
#include "EvtGenModels/EvtBto2piCPiso.hh"
#include "EvtGenModels/EvtBtoKD3P.hh"
#include "EvtGenModels/EvtBtoKpiCPiso.hh"
#include "EvtGenModels/EvtBtoXsEtap.hh"
#include "EvtGenModels/EvtBtoXsgamma.hh"
#include "EvtGenModels/EvtBtoXsll.hh"
#include "EvtGenModels/EvtCBTo3piMPP.hh"
#include "EvtGenModels/EvtCBTo3piP00.hh"
#include "EvtGenModels/EvtD0gammaDalitz.hh"
#include "EvtGenModels/EvtD0mixDalitz.hh"
#include "EvtGenModels/EvtDDalitz.hh"
#include "EvtGenModels/EvtDMix.hh"
#include "EvtGenModels/EvtDToKpienu.hh"
-#include "EvtGenModels/EvtEta2MuMuGamma.hh"
#include "EvtGenModels/EvtEtaDalitz.hh"
#include "EvtGenModels/EvtFlatQ2.hh"
#include "EvtGenModels/EvtFlatSqDalitz.hh"
#include "EvtGenModels/EvtGenericDalitz.hh"
#include "EvtGenModels/EvtGoityRoberts.hh"
#include "EvtGenModels/EvtHQET.hh"
#include "EvtGenModels/EvtHQET2.hh"
#include "EvtGenModels/EvtHelAmp.hh"
#include "EvtGenModels/EvtHypNonLepton.hh"
#include "EvtGenModels/EvtISGW.hh"
#include "EvtGenModels/EvtISGW2.hh"
#include "EvtGenModels/EvtKKLambdaC.hh"
#include "EvtGenModels/EvtKStopizmumu.hh"
#include "EvtGenModels/EvtKstarnunu.hh"
#include "EvtGenModels/EvtKstarstargamma.hh"
#include "EvtGenModels/EvtLNuGamma.hh"
#include "EvtGenModels/EvtLambdaB2LambdaV.hh"
#include "EvtGenModels/EvtLambdaP_BarGamma.hh"
#include "EvtGenModels/EvtLambdacPHH.hh"
#include "EvtGenModels/EvtLb2Baryonlnu.hh"
#include "EvtGenModels/EvtLb2Lll.hh"
#include "EvtGenModels/EvtLb2plnuLCSR.hh"
#include "EvtGenModels/EvtLb2plnuLQCD.hh"
#include "EvtGenModels/EvtMelikhov.hh"
#include "EvtGenModels/EvtMultibody.hh"
#include "EvtGenModels/EvtOmegaDalitz.hh"
#include "EvtGenModels/EvtPVVCPLH.hh"
#include "EvtGenModels/EvtPartWave.hh"
#include "EvtGenModels/EvtPhiDalitz.hh"
#include "EvtGenModels/EvtPhsp.hh"
#include "EvtGenModels/EvtPhspFlatLifetime.hh"
#include "EvtGenModels/EvtPhspDecaytimeCut.hh"
#include "EvtGenModels/EvtPi0Dalitz.hh"
#include "EvtGenModels/EvtPropSLPole.hh"
#include "EvtGenModels/EvtPsi2JpsiPiPi.hh"
#include "EvtGenModels/EvtPto3P.hh"
#include "EvtGenModels/EvtRareLbToLll.hh"
#include "EvtGenModels/EvtSLBKPole.hh"
#include "EvtGenModels/EvtSLN.hh"
#include "EvtGenModels/EvtSLPole.hh"
#include "EvtGenModels/EvtSSDCP.hh"
#include "EvtGenModels/EvtSSD_DirectCP.hh"
#include "EvtGenModels/EvtSSSCP.hh"
#include "EvtGenModels/EvtSSSCPT.hh"
#include "EvtGenModels/EvtSSSCPpng.hh"
#include "EvtGenModels/EvtSTS.hh"
#include "EvtGenModels/EvtSTSCP.hh"
#include "EvtGenModels/EvtSVP.hh"
#include "EvtGenModels/EvtSVPCP.hh"
#include "EvtGenModels/EvtSVPHelAmp.hh"
#include "EvtGenModels/EvtSVPHelCPMix.hh"
#include "EvtGenModels/EvtSVS.hh"
#include "EvtGenModels/EvtSVSCP.hh"
#include "EvtGenModels/EvtSVSCPLH.hh"
#include "EvtGenModels/EvtSVSCPiso.hh"
#include "EvtGenModels/EvtSVSNONCPEIGEN.hh"
#include "EvtGenModels/EvtSVVCP.hh"
#include "EvtGenModels/EvtSVVCPLH.hh"
#include "EvtGenModels/EvtSVVHelAmp.hh"
#include "EvtGenModels/EvtSVVHelCPMix.hh"
#include "EvtGenModels/EvtSVVNONCPEIGEN.hh"
#include "EvtGenModels/EvtSingleParticle.hh"
#include "EvtGenModels/EvtSll.hh"
#include "EvtGenModels/EvtTSS.hh"
#include "EvtGenModels/EvtTVP.hh"
#include "EvtGenModels/EvtTVSPwave.hh"
#include "EvtGenModels/EvtTauHadnu.hh"
#include "EvtGenModels/EvtTauScalarnu.hh"
#include "EvtGenModels/EvtTauVectornu.hh"
#include "EvtGenModels/EvtTaulnunu.hh"
#include "EvtGenModels/EvtVPHOtoVISRHi.hh"
#include "EvtGenModels/EvtVSPPwave.hh"
#include "EvtGenModels/EvtVSS.hh"
#include "EvtGenModels/EvtVSSBMixCPT.hh"
#include "EvtGenModels/EvtVSSMix.hh"
#include "EvtGenModels/EvtVVP.hh"
#include "EvtGenModels/EvtVVPIPI_WEIGHTED.hh"
#include "EvtGenModels/EvtVVSPwave.hh"
#include "EvtGenModels/EvtVVpipi.hh"
#include "EvtGenModels/EvtVectorIsr.hh"
#include "EvtGenModels/EvtVll.hh"
#include "EvtGenModels/EvtVtoSll.hh"
#include "EvtGenModels/EvtVub.hh"
#include "EvtGenModels/EvtVubBLNP.hh"
#include "EvtGenModels/EvtVubBLNPHybrid.hh"
#include "EvtGenModels/EvtVubHybrid.hh"
#include "EvtGenModels/EvtVubNLO.hh"
#include "EvtGenModels/EvtXPsiGamma.hh"
#include "EvtGenModels/EvtY3SToY1SpipiMoxhay.hh"
#include "EvtGenModels/EvtYmSToYnSpipiCLEO.hh"
#include "EvtGenModels/EvtbTosllAli.hh"
#include "EvtGenModels/EvtbTosllBall.hh"
#include "EvtGenModels/EvtbTosllMS.hh"
#include "EvtGenModels/EvtbTosllMSExt.hh"
#include "EvtGenModels/Evtbs2llGammaISRFSR.hh"
#include "EvtGenModels/Evtbs2llGammaMNT.hh"
#include "EvtGenModels/EvtbsToLLLL.hh"
#include "EvtGenModels/EvtbsToLLLLHyperCP.hh"
#include "EvtGenModels/EvtThreeBodyPhsp.hh"
#include "EvtGenModels/EvtFourBodyPhsp.hh"
#include "EvtGenModels/EvtEtaLLPiPi.hh"
#include <assert.h>
#include <ctype.h>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <stdlib.h>
using std::cout;
using std::endl;
using std::fstream;
EvtModelReg::EvtModelReg( const std::list<EvtDecayBase*>* extraModels )
{
EvtModel& modelist = EvtModel::instance();
if ( extraModels ) {
for ( std::list<EvtDecayBase*>::const_iterator it = extraModels->begin();
it != extraModels->end(); ++it ) {
modelist.registerModel( *it );
}
}
modelist.registerModel( new EvtBBScalar );
modelist.registerModel( new EvtLambdaP_BarGamma );
modelist.registerModel( new EvtFlatQ2 );
modelist.registerModel( new EvtTauHadnu );
modelist.registerModel( new EvtTauVectornu );
modelist.registerModel( new EvtVVP );
modelist.registerModel( new EvtSLN );
modelist.registerModel( new EvtISGW2 );
modelist.registerModel( new EvtMelikhov );
modelist.registerModel( new EvtSLPole );
modelist.registerModel( new EvtPropSLPole );
modelist.registerModel( new EvtSLBKPole );
modelist.registerModel( new EvtHQET );
modelist.registerModel( new EvtHQET2 );
modelist.registerModel( new EvtISGW );
modelist.registerModel( new EvtBHadronic );
modelist.registerModel( new EvtVSS );
modelist.registerModel( new EvtVSSMix );
modelist.registerModel( new EvtVSSBMixCPT );
modelist.registerModel( new EvtVSPPwave );
modelist.registerModel( new EvtGoityRoberts );
modelist.registerModel( new EvtSVS );
modelist.registerModel( new EvtTSS );
modelist.registerModel( new EvtTVSPwave );
modelist.registerModel( new EvtSVVHelAmp );
modelist.registerModel( new EvtSVPHelAmp );
modelist.registerModel( new EvtSVPCP );
modelist.registerModel( new EvtVVSPwave );
modelist.registerModel( new EvtDDalitz );
modelist.registerModel( new EvtOmegaDalitz );
modelist.registerModel( new EvtEtaDalitz );
modelist.registerModel( new EvtPhsp );
modelist.registerModel( new EvtPhspDecaytimeCut );
modelist.registerModel( new EvtBtoXsgamma );
modelist.registerModel( new EvtBtoXsll );
modelist.registerModel( new EvtBtoXsEtap );
modelist.registerModel( new EvtSSSCP );
modelist.registerModel( new EvtSSSCPpng );
modelist.registerModel( new EvtSTSCP );
modelist.registerModel( new EvtSTS );
modelist.registerModel( new EvtSSSCPT );
modelist.registerModel( new EvtSVSCP );
modelist.registerModel( new EvtSSDCP );
modelist.registerModel( new EvtSVSNONCPEIGEN );
modelist.registerModel( new EvtSVVNONCPEIGEN );
modelist.registerModel( new EvtSVVCP );
modelist.registerModel( new EvtSVVCPLH );
modelist.registerModel( new EvtSVSCPLH );
modelist.registerModel( new EvtSll );
modelist.registerModel( new EvtVll );
modelist.registerModel( new EvtTaulnunu );
modelist.registerModel( new EvtTauScalarnu );
modelist.registerModel( new EvtKstarnunu );
modelist.registerModel( new EvtbTosllBall );
modelist.registerModel( new EvtBto2piCPiso );
modelist.registerModel( new EvtBtoKpiCPiso );
modelist.registerModel( new EvtSVSCPiso );
modelist.registerModel( new EvtSingleParticle );
modelist.registerModel( new EvtVectorIsr );
modelist.registerModel( new EvtPi0Dalitz );
modelist.registerModel( new EvtHelAmp );
modelist.registerModel( new EvtPartWave );
modelist.registerModel( new EvtVVpipi );
modelist.registerModel( new EvtY3SToY1SpipiMoxhay );
modelist.registerModel( new EvtYmSToYnSpipiCLEO );
modelist.registerModel( new EvtBsquark );
modelist.registerModel( new EvtPhiDalitz );
modelist.registerModel( new EvtBToPlnuBK );
modelist.registerModel( new EvtBToVlnuBall );
modelist.registerModel( new EvtVVPIPI_WEIGHTED );
modelist.registerModel( new EvtVPHOtoVISRHi );
modelist.registerModel( new EvtBTo4piCP );
modelist.registerModel( new EvtBTo3piCP );
modelist.registerModel( new EvtCBTo3piP00 );
modelist.registerModel( new EvtCBTo3piMPP );
modelist.registerModel( new EvtBToKpipiCP );
modelist.registerModel( new EvtLb2Lll );
modelist.registerModel( new EvtRareLbToLll );
modelist.registerModel( new EvtHypNonLepton );
modelist.registerModel( new EvtSVVHelCPMix );
modelist.registerModel( new EvtSVPHelCPMix );
modelist.registerModel( new EvtLNuGamma );
modelist.registerModel( new EvtKstarstargamma );
modelist.registerModel( new EvtVub );
modelist.registerModel( new EvtVubHybrid );
modelist.registerModel( new EvtVubNLO );
modelist.registerModel( new EvtVubBLNP );
modelist.registerModel( new EvtVubBLNPHybrid );
modelist.registerModel( new EvtPto3P );
modelist.registerModel( new EvtBtoKD3P );
modelist.registerModel( new EvtKKLambdaC );
modelist.registerModel( new EvtMultibody );
modelist.registerModel( new EvtDMix );
modelist.registerModel( new EvtD0mixDalitz );
modelist.registerModel( new EvtD0gammaDalitz );
- modelist.registerModel( new EvtEta2MuMuGamma );
modelist.registerModel( new EvtbTosllAli );
modelist.registerModel( new EvtBaryonPCR );
modelist.registerModel( new EvtBToDDalitzCPK );
modelist.registerModel( new EvtLambdaB2LambdaV );
modelist.registerModel( new EvtLambda2PPiForLambdaB2LambdaV );
modelist.registerModel( new EvtV2VpVmForLambdaB2LambdaV );
modelist.registerModel( new EvtPVVCPLH );
modelist.registerModel( new EvtSSD_DirectCP );
modelist.registerModel( new EvtBcToNPi( true ) ); // true = print author info
modelist.registerModel( new EvtBcPsiNPi );
modelist.registerModel( new EvtBcBsNPi );
modelist.registerModel( new EvtBcBsStarNPi );
modelist.registerModel( new EvtBcSMuNu );
modelist.registerModel( new EvtBcVMuNu );
modelist.registerModel( new EvtBcTMuNu );
modelist.registerModel( new EvtBcVNpi );
modelist.registerModel( new EvtSVP );
modelist.registerModel( new EvtTVP );
modelist.registerModel( new EvtXPsiGamma );
modelist.registerModel( new EvtbsToLLLL );
modelist.registerModel( new EvtbsToLLLLHyperCP );
modelist.registerModel( new EvtBLLNuL );
modelist.registerModel( new EvtKStopizmumu );
modelist.registerModel( new EvtVtoSll );
modelist.registerModel( new EvtBsMuMuKK );
modelist.registerModel( new EvtGenericDalitz() );
modelist.registerModel( new EvtBcVHad );
modelist.registerModel( new Evtbs2llGammaMNT );
modelist.registerModel( new Evtbs2llGammaISRFSR );
modelist.registerModel( new EvtbTosllMS );
modelist.registerModel( new EvtbTosllMSExt );
modelist.registerModel( new EvtLb2plnuLQCD );
modelist.registerModel( new EvtLb2plnuLCSR );
modelist.registerModel( new EvtLb2Baryonlnu );
modelist.registerModel( new EvtBToDiBaryonlnupQCD );
modelist.registerModel( new EvtFlatSqDalitz );
modelist.registerModel( new EvtPhspFlatLifetime );
modelist.registerModel( new EvtLambdacPHH );
modelist.registerModel( new EvtDToKpienu );
modelist.registerModel( new EvtPsi2JpsiPiPi );
modelist.registerModel( new EvtThreeBodyPhsp );
modelist.registerModel( new EvtFourBodyPhsp );
modelist.registerModel( new EvtEtaLLPiPi );
}
diff --git a/src/EvtGenModels/EvtPi0Dalitz.cpp b/src/EvtGenModels/EvtPi0Dalitz.cpp
index 9e14e36..866ce31 100644
--- a/src/EvtGenModels/EvtPi0Dalitz.cpp
+++ b/src/EvtGenModels/EvtPi0Dalitz.cpp
@@ -1,107 +1,141 @@
/***********************************************************************
* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
* *
* This file is part of EvtGen. *
* *
* EvtGen is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* EvtGen is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with EvtGen. If not, see <https://www.gnu.org/licenses/>. *
***********************************************************************/
#include "EvtGenModels/EvtPi0Dalitz.hh"
#include "EvtGenBase/EvtDiracSpinor.hh"
#include "EvtGenBase/EvtGenKine.hh"
#include "EvtGenBase/EvtPDL.hh"
#include "EvtGenBase/EvtParticle.hh"
#include "EvtGenBase/EvtPatches.hh"
#include "EvtGenBase/EvtReport.hh"
#include "EvtGenBase/EvtTensor4C.hh"
#include "EvtGenBase/EvtVector4C.hh"
#include <fstream>
#include <stdio.h>
#include <stdlib.h>
#include <string>
using std::fstream;
std::string EvtPi0Dalitz::getName()
{
return "PI0_DALITZ";
}
EvtDecayBase* EvtPi0Dalitz::clone()
{
return new EvtPi0Dalitz;
}
void EvtPi0Dalitz::initProbMax()
{
- setProbMax( 3.5 );
+ // Search for maximum probability. In order to avoid setting up all
+ // particles with spinors and four-momenta, we use result after all
+ // contractions, which is:
+ // 1/((m_R^2-q^2)^2+m_R^2 Gamma_R^2) 1/(2q^2) (M^2-q^2)^2 beta_l
+ // (1+cos(theta)^2) where we set cos(theta)=1
+ auto daughter1 = getDaug( 0 );
+ auto daughter2 = getDaug( 1 );
+ double q2Min = EvtPDL::getMass( daughter1 ) + EvtPDL::getMass( daughter2 );
+ q2Min *= q2Min;
+ double q2Max = EvtPDL::getMass( getParentId() );
+ q2Max *= q2Max;
+ const int steps = 20000;
+ const double step = ( q2Max - q2Min ) / steps;
+ double maxProb = 0;
+ for ( int ii = 0; ii < steps; ++ii ) {
+ double q2 = q2Min + ii * step;
+ const double mSqDiff = m_m0Sq - q2;
+ const double q2Sq = q2 * q2;
+ double prob = ( q2Max - q2 ) * ( q2Max - q2 ) * ( q2 - q2Min ) /
+ ( q2Sq );
+ prob *= ( 1.0 / ( mSqDiff * mSqDiff + m_m0SqG0Sq ) );
+ // When generating events, we do not start from phase-space, but
+ // add some pole to it, weight of which is taken into account
+ // elsewhere
+ prob /= 1.0 + m_poleSize / ( q2Sq );
+ if ( prob > maxProb ) {
+ maxProb = prob;
+ }
+ }
+ setProbMax( maxProb * 1.05 );
}
void EvtPi0Dalitz::init()
{
// check that there are 0 arguments
checkNArg( 0 );
checkNDaug( 3 );
checkSpinParent( EvtSpinType::SCALAR );
checkSpinDaughter( 0, EvtSpinType::DIRAC );
checkSpinDaughter( 1, EvtSpinType::DIRAC );
checkSpinDaughter( 2, EvtSpinType::PHOTON );
+
+ // Rescale pole size to improve efficiency. Not sure about exact
+ // factor, but this seem to be best simple rescaling for
+ // eta-->e+e-gamma.
+ const double parentMass = EvtPDL::getMass( getParentId() );
+ m_poleSize *= parentMass * parentMass / ( 0.135 * 0.135 );
}
void EvtPi0Dalitz::decay( EvtParticle* p )
{
EvtParticle *ep, *em, *gamma;
setWeight( p->initializePhaseSpace( getNDaug(), getDaugs(), false,
- 0.00000002, 0, 1 ) );
-
+ m_poleSize, 0, 1 ) );
ep = p->getDaug( 0 );
em = p->getDaug( 1 );
gamma = p->getDaug( 2 );
// the next four lines generates events with a weight such that
// the efficiency for selecting them is good. The parameter below of
// 0.1 is the size of the peak at low q^2 (in arbitrary units).
// The value of 0.1 is appropriate for muons.
// when you use this remember to remove the cut on q^2!
//ep em invariant mass^2
double m2 = ( ep->getP4() + em->getP4() ).mass2();
EvtVector4R q = ep->getP4() + em->getP4();
//Just use the prob summed over spins...
EvtTensor4C w, v;
v = 2.0 * ( gamma->getP4() * q ) *
EvtGenFunctions::directProd( q, gamma->getP4() ) -
( gamma->getP4() * q ) * ( gamma->getP4() * q ) * EvtTensor4C::g() -
m2 * EvtGenFunctions::directProd( gamma->getP4(), gamma->getP4() );
w = 4.0 * ( EvtGenFunctions::directProd( ep->getP4(), em->getP4() ) +
EvtGenFunctions::directProd( em->getP4(), ep->getP4() ) -
EvtTensor4C::g() *
( ep->getP4() * em->getP4() - ep->getP4().mass2() ) );
double prob = ( real( cont( v, w ) ) ) / ( m2 * m2 );
- prob *= ( 1.0 / ( ( 0.768 * 0.768 - m2 ) * ( 0.768 * 0.768 - m2 ) +
- 0.768 * 0.768 * 0.151 * 0.151 ) );
+ const double m2Diff = m_m0Sq - m2;
+ prob *= ( 1.0 / ( m2Diff * m2Diff + m_m0SqG0Sq ) );
// EvtGenReport(EVTGEN_INFO,"EvtGen") << "prob is "<<prob<<endl;
setProb( prob );
return;
}