Large rapidity y3.2 data analysis from 200 GeVc AuAu and pp runs

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Large rapidity (y3.2) data analysis from 200
GeV/c AuAu and pp runs

• Radoslaw Karabowicz
• Hot Matter Physics Department
• M. Smoluchowski Insititue of Physics
• Jagiellonian University, Krakow

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SPECTRA CHALLENGE
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SPECTRA CHALLENGE contd
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SPECTRA CHALLENGE contd
I am definiately overpredicting data at lower pt
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SPECTRA CHALLENGE contd
After properly initiliazing RICH Im going down
at low pts
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Comparison with Ramiros spectra (pp 200GeV/c)
This is very similar to this plot - suggests
problems with acceptance maps (I generate my own
different acc.maps) -gt but recently I was
furiously cleaning my directory and deleted
(without cvsing) my acceptance maps generator. I
have old version but its not compiling yet
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Comparison with Ramiros spectra (pp 200GeV/c)
But anyways, the comparison with Ramiros spectra
is relatively good at least for pions
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pT spectra at large y (from AuAu and pp at 200
GeV/c)
2deg setting not corrected for efficiency
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Antiparticle-to-particle ratio
AuAu
pp
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Proton and kaon to pion spectra
proton
kaon
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Nuclear Modification Factors
pions at y 3.2 kaons at y 3.1 protons at y
3.1
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Hirano Nara Phys.Rev. C 68, 064902
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pT spectra at various y - AuAu
Spectra at various rapidities show stable
behaviour of the spectra with rapidity
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pT spectra at various y - pp
Spectra at various rapidities show stable
behaviour of the spectra with rapidity
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RAA at various rapidities
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Nuclear Modification Factors
pions at y 3.0 kaons at y 3.0 protons at y
3.0
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Nuclear Modification Factors
pions at y 3.1 kaons at y 3.1 protons at y
3.1
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Nuclear Modification Factors
pions at y 3.2 kaons at y 3.2 protons at y
3.2
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Nuclear Modification Factors
pions at y 3.3 kaons at y 3.3 protons at y
3.3
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Nuclear Modification Factors
pions at y 3.4 kaons at y 3.4 protons at y
3.4
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Nuclear Modification Factors
pions at y 3.5 kaons at y 3.5 protons at y
3.5
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Nuclear Modification Factors
pions at y 3.7 kaons at y 3.6 protons at y
3.6
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RAA at various centralities
pions at y 3.2 kaons at y 3.1 protons at y
3.1
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RAA vs Npart
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RAA versus dN/dh and energy density
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conclusions

• Basicly no rapidity depedence of Raa (just like
  in QM05)
• Strong centrality dependence of Raa for all
  particles, stronger than that seen at midrapidity
  (just like in QM05)
• Although models predict Raa raising at forward
  rapidities no such behavoiur is seen in my data,
  BUT pt region is not enough to make very strong
  conclusions
• As to data consistency - I am overpredicting
  spectra at lower pt's