improvement of ftf (fritiof) model in geant-4
DESCRIPTION
Improvement of FTF (FRITIOF) Model in GEANT-4. PP->P+X. First results. pA-> p +X. First results. Particle multiplicities in pp-interactions. Comparison with exp. data. Particle multiplicities in pp-interactions. Comparison with exp. data. Particle multiplicities in pp-interactions. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Improvement of FTF (FRITIOF) Model in GEANT-4](https://reader035.vdocuments.site/reader035/viewer/2022062422/5681374b550346895d9eded2/html5/thumbnails/1.jpg)
Improvement of FTF (FRITIOF) Model in GEANT-4
![Page 2: Improvement of FTF (FRITIOF) Model in GEANT-4](https://reader035.vdocuments.site/reader035/viewer/2022062422/5681374b550346895d9eded2/html5/thumbnails/2.jpg)
PP->P+X First results
![Page 3: Improvement of FTF (FRITIOF) Model in GEANT-4](https://reader035.vdocuments.site/reader035/viewer/2022062422/5681374b550346895d9eded2/html5/thumbnails/3.jpg)
pA->p+X First results
![Page 4: Improvement of FTF (FRITIOF) Model in GEANT-4](https://reader035.vdocuments.site/reader035/viewer/2022062422/5681374b550346895d9eded2/html5/thumbnails/4.jpg)
Particle multiplicities in pp-interactions
Comparison with exp. data
![Page 5: Improvement of FTF (FRITIOF) Model in GEANT-4](https://reader035.vdocuments.site/reader035/viewer/2022062422/5681374b550346895d9eded2/html5/thumbnails/5.jpg)
Particle multiplicities in pp-interactions
Comparison with exp. data
![Page 6: Improvement of FTF (FRITIOF) Model in GEANT-4](https://reader035.vdocuments.site/reader035/viewer/2022062422/5681374b550346895d9eded2/html5/thumbnails/6.jpg)
Particle multiplicities in pp-interactions
Comparison with exp. data
![Page 7: Improvement of FTF (FRITIOF) Model in GEANT-4](https://reader035.vdocuments.site/reader035/viewer/2022062422/5681374b550346895d9eded2/html5/thumbnails/7.jpg)
New variant of FTF modelPP-interactions at 400 GeV/c,M. Aguilar-Benitz et al., (NA-27 Collab.) Zeit. fur Phys., C50 (1991) 405.
Comparisonwith exp. data
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Comparison with exp. data
![Page 9: Improvement of FTF (FRITIOF) Model in GEANT-4](https://reader035.vdocuments.site/reader035/viewer/2022062422/5681374b550346895d9eded2/html5/thumbnails/9.jpg)
Comparison with exp. data
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Comparison with exp. data
pp-interactions are described quite well!
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p+Be, p+Au interactions at 14.6 GeV/c T. Abbott et al. (E-802 Callab.), Phys. Rev. D45 (1992) 3906
Comparison with exp. data
In FTF model probabilities of intra-nuclear collisions were taken from QGSM. In the original FRITIOF model - from Glauber approximation
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Comparison with exp. data
There is a problem with description of rapidity distributions
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3 GeV
9 GeV
Check of string fragmentation
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Check of string fragmentation
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Check of fragmentation function – f(z)
F(z)~(1/z)(1-z) exp(- a*mt^2)
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Check of string fragmentation. Single string fragmentation.
π-mesons
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Check of string fragmentation. Single string fragmentation.
There is a clear forward-backward assymetry in the FRITIOF model
π-mesons
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Check of string fragmentation. Single string fragmentation.
Very strange results from the FRITIOF model!
protons
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Check of string fragmentation. Single string fragmentation.
protons
There is a weak leading particles effect in FTF
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We have some improvement of FTF
Conclusion
Implemented
Glauber calculations are implemented
Inclusion of the leading particles effectIs in progress
We hope on the better results
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