1 / 19

Reply to the HARP-CDP group V. Uzhinsky, CERN and LIT JINR

Reply to the HARP-CDP group V. Uzhinsky, CERN and LIT JINR.

shandi
Télécharger la présentation

Reply to the HARP-CDP group V. Uzhinsky, CERN and LIT JINR

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Reply to the HARP-CDP groupV. Uzhinsky, CERN and LIT JINR

  2. Some natural questions arise at a reading of the paper: 1) Is the structure appearing in the hadron-hadron interactions and in the interactions of hadrons with heavy nuclei?; 2) Is there any dependence of the structure on the interaction energy or on the multiplicity of produced particles?;3) Has the resonance decay any influence on the structure?, and so on? They are not considered in the paper. • Geant4 hadronic models: • The low energy parameterized model (LEP, Gheisha); • The high energy parameterized model (HEP, Gheisha); • The binary cascade model (BIC); • The Bertini model (BERT); • The quark-gluon string model (QGS); • The Fritiof model (FTF). All of them were studied!

  3. 1) Is the structure appearing in the hadron-hadron interactions? Yes! LEP, LEPAR, Gheisha π+

  4. 1) Is the structure appearing in the hadron-hadron interactions? Yes! HEP, HEPAR, Gheisha π+

  5. 1) Is the structure appearing in the hadron-hadron interactions? LEP, HEP (LEPAR, HEPAR = Gheisha) program code Yes! • Program steps: • Sampling of multiplicity of produced particles; • Sampling of Pt of the particles; • Sampling of Xf of the particles. geant4-09-01-ref-02/source/processes/hadronic/models/low_energy/src/ CVS G4LEKaonZeroInelastic.cc G4LCapture.cc G4LELambdaInelastic.cc G4LEAlphaInelastic.cc G4LElastic.cc G4LEAntiKaonZeroInelastic.cc G4LENeutronInelastic.cc G4LEAntiLambdaInelastic.cc G4LEOmegaMinusInelastic.cc G4LEAntiNeutronInelastic.cc G4LEPionMinusInelastic.cc G4LEAntiOmegaMinusInelastic.cc G4LEPionPlusInelastic.cc G4LEAntiProtonInelastic.cc G4LEProtonInelastic.cc G4LEAntiSigmaMinusInelastic.cc G4LEProtonInelastic.cc~ G4LEAntiSigmaPlusInelastic.cc G4LESigmaMinusInelastic.cc G4LEAntiXiMinusInelastic.cc G4LESigmaPlusInelastic.cc G4LEAntiXiZeroInelastic.cc G4LETritonInelastic.cc G4LEDeuteronInelastic.cc G4LEXiMinusInelastic.cc G4LEKaonMinusInelastic.cc G4LEXiZeroInelastic.cc G4LEKaonPlusInelastic.cc G4LFission.cc No! geant4-09-01-ref-02/source/processes/hadronic/util/src CVS G4HadSignalHandler.cc G4ReactionDynamics.cc~ G4Bessel.cc G4HadTmpUtil.cc G4ReactionDynamics.ccPrint G4HadFinalState.cc G4IsoResult.cc G4ReactionKinematics.cc G4HadProjectile.cc G4LightMedia.cc G4ReactionProduct.cc G4HadronicWhiteBoard.cc G4Nucleus.cc G4StableIsotopes.cc G4HadSecondary.cc G4ReactionDynamics.cc Yes! while( ++innerCounter < 7 ) { ran = G4UniformRand()*dndl[19]; l = 1; while( ( ran >= dndl[l] ) && ( l < 20 ) )l++; l = std::min( 19, l ); // x = std::min( 1.0, pt*(binl[l-1] + G4UniformRand()*(binl[l]-binl[l-1])/2.) ); //Uzhi x = std::min( 1.0, pt*(binl[l-1] + G4UniformRand()*(binl[l]-binl[l-1]) ) ); //Uzhi Here it is!

  6. The bug is fixed!

  7. 1) Is the structure appearing in the hadron-hadron interactions? BERT, Bertini’s model There is a problem with baryon spectra!

  8. 1) Is the structure appearing in the hadron-hadron interactions? BIC, binary cascade model There can be a problem with baryon spectra!

  9. 1) Is the structure appearing in the hadron-hadron interactions? RPG There can be a problem with baryon spectra!

  10. Is the structure appearing in the interactions of hadrons with heavy nuclei? LEPAR Yes! The same source of the structure!

  11. LHEP Once more trhough the HARP-CDP paper P+Be -> p +x π+Be -> p +x Fig. 11 Fig. 5a π+Be -> π+ +x P+Be -> π+ +x Fig. 5b Fig. 11 P+Be -> π- +x π+Be -> π- +x We know the source!

  12. QGSC Once more trhough the HARP-CDP paper P+Be -> p +x π+Be -> p +x Fig. 6a π+Be -> π+ +x P+Be -> π+ +x Fig. 6b (effect of LEPAR) P+Be -> π- +x π+Be -> π- +x

  13. QGSP-BERT Once more trhough the HARP-CDP paper P+Be -> p +x π+Be -> p +x Fig. 7b π+Be -> π+ +x P+Be -> π+ +x Fig. 7a P+Be -> π- +x π+Be -> π- +x

  14. QGSP-BIC Once more trhough the HARP-CDP paper P+Be -> p +x π+Be -> p +x π+Be -> π+ +x P+Be -> π+ +x Fig. 8b Fig. 8a P+Be -> π- +x π+Be -> π- +x ?, LEP is used instead of BIC!

  15. Once more trhough the HARP-CDP paper QBBC=QGSM+QEL+CHIPS+BIC P+Be -> p +x π+Be -> p +x Fig. 9a (effect of CHIP?) ? π+Be -> π+ +x P+Be -> π+ +x Fig. 9b P+Be -> π- +x π+Be -> π- +x

  16. FTFP Once more trhough the HARP-CDP paper P+Be -> p +x π+Be -> p +x Fig. 10a (effect of no FM) π+Be -> π+ +x P+Be -> π+ +x Fig. 10b P+Be -> π- +x π+Be -> π- +x

  17. Page 14 Once more trhough the HARP-CDP paper Question: why “shape” Is assumed as bad one? What is a criteria? There Is no stable exp. data.

  18. Conclusion • Bug in LEP and HEP is fixed. • Fermi-motion is included. • The question is closed! Lesson: Monte Carlo data must be analyzed as An experimental data. Physical thought must Work!

More Related