1. Application of FTF model for simulation of Pbar-P and
Pbar-A Interactions
A.Galoyan
PndBoxGenerator, PndDpmDirect, PndDpmGenerator, PndEvtGenGenerator,
PndFlatParticleGenerator., PndFlukaGenerator, PndGasGenerator,
PndGiBuuGenerator. PndHypBupGenerator, PndJRGenerator,
PndPythia6Generator, PndUrqmdSmmGenerator, EMFFgenerators
Geant4 9.5 realese (
Interactions of anti-baryons (including anti-hyperons) and light anti-nuclei with matter have been implemented in the Fritiof (FTF) model. This model is valid for incident anti-baryon energies from 0 to 1 TeV, and for incident anti-nucleus momenta from 150 MeV/c/nucleon up to 1 TeV/c/nucleon. Corresponding anti-baryon and anti-nuclear cross section classes have also been added. New processes were added to handle inelastic reactions of anti-deuterons, anti-tritons, anti-3He and anti-alphas. (from the release Note)
Content
1. Cross sections of Pbar-P processes in DPM and FTF models
2. Comparison of calculations of Pbar-P channels by FTF model with exp. data
3. Comparison of calculations of Pbar-P inclusive cross sections with exp. data
4. Differential cross sections of Λ-Λbar and Λ-Σbar productions in Pbar-P interactions
5. Consideration of Λ and Ks0 kinematical properties produced in Pbar-P reactions
6. Calculations of kinematical properties of particles produced in Pbar-A interactions
7. Cross sections of Λ and Ks0 production in Pbar-Nucleus interactions. 1

2. FTF generator in PandaRoot
PndFtfGen class in PandaRoot/trunk/pgenerators directory
pgenerators/FtfEvtGen directory:
binmake_FORTRAN.mk main.cc standard_FORTRAN.mk
CMakeLists.txt PbarA.mac Test30HadronProduction.c
common.mk Ftfmake Test30Material.c
PbarP.mac Test30Physics.c README.txt
G4DecKineticTracks.c include Test30VSecondaryGenerator.c
Include directory:
FTFtest1.icc G4DecKineticTracks.hh Test30Physics.hh FTFtest2.icc
Test30VSecondaryGenerator.hh FTFtest3.icc Test30HadronProduction.hh
FTFtest4.icc Test30Material.hh
To compile FTF it is needed to give command:
> make –f Ftfmake
FTFGen executable file is produced.
FTF allows one to generate Pbar – P or Pbar – A events ai energy
range from 100 MeV to 1000 GeV 2

3. Pbar- P processes in DPM model
Calculation procedure:
V.V. Uzhinsky and A.S. Galoyan, hep-ph/
Cross-sections of various processes in anti-P P
interactions.
Physics Book of PANDA Collaboration,
Physics Performance Report for PANDA
(AntiProton Annihilations at Darmstadt)
Strong Interaction Studies with Antiprotons
Implementation:
A.Galoian and V.Uzhinsky,AIP Conf.Proc.796:79,2005
New Monte Carlo implementation of quark-gluon
string model of anti-p p interactions. 3

4. Cross sections of Pbar-P processes in FTF model of Geant4

5. Pbar-P channel cross sections with baryons in final states
test22/PbarPchan
E.Bracci et al.,CERN/HERA 73-1(1973) 5

6. Pbar-P annihilation channel cross sections
test22/PbarPchan
Exp. Data: E.Bracci et al.,CERN/HERA 73-1(1973) 6

7. Results for inclusive cross sections of Antiproton – Proton reactions
Rapidity distributions of pi- mesons in Pbar-P interactions.
test22/PbarPinclusive
G.D. Patel et al., Z. Phys. C - Particles and Fields 12,189, 1982
C.P. Ward et al., Nucl. Phys. B
E.E. Zabrodin et al., Phys. Rev.D, V52, N3, 1995 7

8. Results for inclusive cross sections of Antiproton – Proton reactions
Rapidity distributions of pi+ mesons in Pbar-P interactions in
a wide energy range 8

9. Results for inclusive cross sections of AntiProton–Proton reactions
Rapidity distributions of protons
test22/PbarPinclusive
E.V. Vlasov, Z. Phys. C - Particles and Fields 13, 95, 1982
G.D. Patel et al., Z. Phys. C - Particles and Fields 12,189, 1982J.
Chyla, Czech. J. Phys. B
E .G. Boos et al., Nucl. Phys. B , 1980 9

10. Differential Cross Sections of PbarP->ΛΛbar / ΛΣbar
test22/PbarHyperon
P. D. Barnes et al., Phys. Rev. C (1996)
P. D. Barnes et al., Phys Lett B (1990)
P. D. Barnes et al., Phys Lett B (1987) 10

11. Differential Cross Sections of PbarP->ΛΛbar / ΛΣbar
test22/PbarHyperon
P. D. Barnes et al., Phys. Rev. C (1996)
P. D. Barnes et al., Phys Lett B (1990)
P. D. Barnes et al., Phys Lett B (1987) 11

12. Differential Cross Sections of PbarP->ΛΛbar / ΛΣbar at 6 GeV/c
test22/PbarHyperon
exp. data: H. Becker et al., Nucl. Phys. B (1978) 12

13. Differential Cross Sections of PbarP->ΛΛbar at different momenta
test22/PbarHyperon
exp. data: B. Jayet et al., Nuov. Cim. A45, 371 (1978) 13

14. Xf and Pt2 distributions of Ks0 in PbarP->Ks0 +X at Plab=0,76 GeV/c
Inclusive Cross Sections of PbarP->Λ+X and PbarP->Ks0+X processes
test22/PbarHyperon
exp.data: S. Banerjee et al., TIFR-BC-78-8
Xf and Pt2 distributions of Ks0 in PbarP->Ks0 +X at Plab=0,76 GeV/c 14

15. Kinametical disributios of Λ, Λbar, Ks0 produced in PbarP interactions at P=3.6 GeV/c
exp data: S. Banerjee et al., TIFR-BC-78-8 15

16. Kinametical distributions of Λ and Ks0 produced in PbarP interactions at Plab=12 GeV/c
exp data: D. Bertrand et al., Nucl. Phys. B (1977) 16

17. Kinametical distributions of Λ and Ks0 produced in PbarP interactions at Plab=22.4 GeV/c
exp data: B.V. Batyunya et al., Z. Phys.C (1984) 18

18. Kinametical distributions of Λ and Ks0 produced in PbarP interactions at Plab=100 GeV/c19
exp data: D.R. Ward et al., Phys. Lett. 62B 237 (1976)

19. Correction of multiplicity of intra-nuclear collisions
Simulation of Antibaryon–Nucleus interactions in FTF model
A. Galoyan, Hyperfine Interactions: v. 215 (2013) 69
“Simulations of light antinucleus-nucleus interactions”
Low energy, Std. cascade.
Cascade+ Resonances
Model of nuclear disintegration
In high-energy nucleus nucleus
interactions.
K. Abdel-Waged, V.V. Uzhinsky
Phys.Atom.Nucl.60: ,1997.
High energy, Std. QGS.
Correction of multiplicity of intra-nuclear collisions
S.Yu. Shmakov, V.V. Uzhinsky,
Zeit. fur Phys. C36:77,1987.
Max. cross section method:
W.A. Coleman: Nucl. Sci. Eng. 32 (1968) 76 19

20. Antibaryon–Nucleus interactions, inelastic interactions
Correction of multiplicity of intra-nuclear collisions, HARP-CDP exp. data
Nmax=1, Plab=3, 5 GeV/c: Nmax=2, Plab=8 GeV/c: Nmax=3, Plab=12
The same is true for anti-nucleus – nucleus interactions 20

21. reactions inflight Results of FTF validation for Antiproton–Nucleus
Momentum distributions of π Momentum distributions of Protons
exp data: P.L.McGaughey et al., Phys. Rev. Lett. V56, N20, 1986 21

22. Angle and energy distributions of pions and protons in Pbar-C /Nbar-C
Results of FTF validation for AntiProton–Nucleus
reactions inflight
Angle and energy distributions of pions and protons in Pbar-C /Nbar-C
interactions at projectile momentum 750 MeV/c
exp. data: P.L.McGaughey et al., Phys. Rev. Lett. V56, N20, 1986 22

23. reactions inflight Results of FTF validation for AntiProton–Nucleus
Kinetic energy spectra of neutrons produced in Pbar-Al, Pbar-Cu at
projectile momenta 1.22 GeV/c
T. von Egidy et al., Eur. Phys. J. A 8, 197 (2000) LEAR collab. data 23

24. Kinetic energy spectra of neutrons produced in Pbar-Ta, Pbar-U
Results of FTF validation for Antiproton–Nucleus
Kinetic energy spectra of neutrons produced in Pbar-Ta, Pbar-U
A. Galoyan, V. Uzhinsky //Contribution to Proceedings of ISHEPP XXII, Dubna 2015
T. von Egidy et al., Eur. Phys. J. A 8, 197 (2000) LEAR collab. data 24

25. Results of FTF validation for Antiproton–Nucleus reactions
Multiplicity distributions of neutrons produced in Pbar-Nucleus
at energy 1.22 GeV in FTF and UrQMD models
A.S.Galoyan et al., «Scaling and Asymptotical Properties of Slow Neutron Inclusive Cross Sections ...» JETP Lett exp.data : B. Lott et al., Phys.Rev.C 25

26. interactions at p= 200 GeV/c
Results of FTF validation for Pbar-Nucleus
interactions at p= 200 GeV/c
Rapidity Ch+, Rapidity Ch- mesons
Multi-particle production on hydrogen, argon and xenon targets in a streamer chamber by 200 GeV/c proton and antiproton beams. De Marzo et al. Phys. Rev. D26 (1982) 1019 26

27. Production cross sections of Ks0 and Λ and produced in PbarA
interactions
Plab = 600 MeV/c H He Ne20
Sigma_Lam
Sigma_Ks
Plab= 3000 MeV/c H H Ta
Sigma_Lam
Sigma_Ks
Plab=4000 MeV/c H Ta
Sigma_Lam
Sigma_Ks
exp data: F. Balestra et al., Nucl. Phys. A (1991)
K. Miyano et al., preprint KEK (1988) 27

28. Kinametical properties of Λ and Ks0 produced in PbarXe
interactions at Plab=200 GeV/c
I. Derado et al., Z. Phys. C Particles and Fields 50, (1991) 28

29. Conclusion
1. Inclusive cross sections of Pbar-P processes are calculated in FTF model new
Geant4 version: ref.03 Good results are obtained in comparison with
corresponding exp. data.
2. Differential cross sections of ΛΛbar and ΛΣbar produced in Pbar-P interactions
are calculated in FTF model. Anisotropic decay of strings in process b ( diquark-
anti-diquark creation ) is included for agreement with corresponding exp. data
3. Kinematical properties of Λ hyperons and Ks0 mesons produced
in PbarP processes are calculated in FTF model without and with anizotropic decay
and compared with exp. data at different initial momenta.
4. Kinematical properties of protons, pi-mesons are calculated in FTF model in new
Geant4 - version. Good description of corresponding exp. data are obtained.
5. Promising results are obtained in comparison of calculated kinetic energy
and multiplicity of neutrons produced in antiproton-Nucleus interact. with exp. data
6. Comparison of Λ hyperon production cross sections in Pbar-Nucleus
interactions at low and intermediate energies shows that results of FTF+Bic are
essentially lower than exp. data. However, calculated Ks0 meson production cross
sections are in reasonable agreement with exp. data.
7. Good results are obtained at comparison of exp data with FTF calculations for
Λ hyperons and Ks0 mesons produced in Pbar-P interactions at 100 GeV/c and
Pbar-Xe interactions at 200 GeV/c. 29

30. Pbar-A annihilation at rest.Cu U
Energy spectra of pi+ mesons produced in Pbar–D/Ne at rest
J. Rielberger, Nuclear Physics B (Proc Suppl ) 8 (1989) 22

31. Results for inclusive cross sections of Antiproton–Proton reactions
PT2 of Pi+ mesons PT2 of Protons
J. Chyla, Czech. J. Phys. B
E .G. Boos et al., Nucl. Phys. B , 1980
E.V. Vlasov, Z. Phys. C - Particles and Fields 13, 95, 1982 14

32. Kinematical distributions of Λ, Λbar, Ks0 produced in PbarP interactions at P=3.6 GeV/c
exp data: S. Banerjee et al., TIFR-BC-78-8 13