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Properly Sample Lorentz Invariant Phase Space in Pion Production FSI #448

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Properly Sample Lorentz Invariant Phase Space in Pion Production FSI #448

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28a2f5c
Properly sample lorentz-invariant-phase-space for pion production kin…
gputnam Feb 20, 2025
bfd3d20
Adjust biasing of the three-body phase space used in hA/hN to allow
sjgardiner Sep 15, 2025
27222a7
Merge pull request #1 from sjgardiner/feature/gputnam-fix-ha-pionprod
gputnam Sep 16, 2025
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4 changes: 2 additions & 2 deletions config/HAIntranuke2018.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,7 @@ DelRNucleon double Yes mult. factor for nucleon de-Broglie wavelength
<param type="bool" name="INUKE-DoCompoundNucleus"> true </param>
<param type="bool" name="INUKE-XsecNNCorr"> true </param>



<param type="double" name="HAINUKE-DelRPion"> 0.0 </param>
<param type="double" name="HAINUKE-DelRNucleon"> 0.0 </param>
Expand All @@ -74,7 +74,7 @@ DelRNucleon double Yes mult. factor for nucleon de-Broglie wavelength
<param type="double" name="FSI-Nucleon-FracAbsScale"> 1.000 </param>
<param type="double" name="FSI-Nucleon-FracPiProdScale"> 1.000 </param>
-->

</param_set>

</alg_conf>
7 changes: 5 additions & 2 deletions src/Physics/HadronTransport/HAIntranuke2018.cxx
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Expand Up @@ -2,7 +2,7 @@
/*
Copyright (c) 2003-2024, The GENIE Collaboration
For the full text of the license visit http://copyright.genie-mc.org


Author: Steve Dytman <[email protected]>, Pittsburgh Univ.
Aaron Meyer <[email protected]>, Pittsburgh Univ.
Expand Down Expand Up @@ -781,7 +781,7 @@ void HAIntranuke2018::Inelastic(
GHepParticle s3(*p);

bool success = utils::intranuke2018::PionProduction(
ev,p,&s1,&s2,&s3,fRemnA,fRemnZ,fRemnP4, fDoFermi,fFermiFac,fFermiMomentum,fNuclmodel);
ev,p,&s1,&s2,&s3,fRemnA,fRemnZ,fRemnP4, fDoFermi,fFermiFac,fFermiMomentum,fNuclmodel,fPiProdThreeBodyBias);

if (success){
LOG ("HAIntranuke2018",pINFO) << " successful pion production fate";
Expand Down Expand Up @@ -1562,6 +1562,8 @@ void HAIntranuke2018::LoadConfig(void)
GetParamDef( "FSI-Nucleon-FracAbsScale", fNucleonFracAbsScale, 1.0 ) ;
GetParamDef( "FSI-Nucleon-FracPiProdScale", fNucleonFracPiProdScale, 1.0 ) ;

GetParamDef( "FSI-PiProd-ThreeBodyBias", fPiProdThreeBodyBias, 0.0 ) ;

// report
LOG("HAIntranuke2018", pINFO) << "Settings for INTRANUKE mode: " << INukeMode::AsString(kIMdHA);
LOG("HAIntranuke2018", pINFO) << "R0 = " << fR0 << " fermi";
Expand All @@ -1577,6 +1579,7 @@ void HAIntranuke2018::LoadConfig(void)
LOG("HAIntranuke2018", pINFO) << "DoFermi? = " << ((fDoFermi)?(true):(false));
LOG("HAIntranuke2018", pINFO) << "DoCmpndNuc? = " << ((fDoCompoundNucleus)?(true):(false));
LOG("HAIntranuke2018", pINFO) << "XsecNNCorr? = " << ((fXsecNNCorr)?(true):(false));
LOG("HAIntranuke2018", pINFO) << "PiProdBias = " << fPiProdThreeBodyBias;
}
//___________________________________________________________________________
/*
Expand Down
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