Alberto Accardi (Iowa State U.)

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Space-time evolution of hadronization probed in
eA collisions
Alberto Accardi (Iowa State U.)
Thomas Jefferson National Laboratory 31 January
2007
Based on A.A., PLB in press nucl-th/0604041
A.A., EPJC in press nucl-th/0609010
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Outline

• Hadronization in nuclear matter
• space-time evolution, non-perturbative
  confinement
• calibration of jet-quenching signal in AA
• Short review of experimental data
• Hadron quenching in nDIS
• formation times
• prehadron vs. hadron
• energy loss vs. absorption
• Can we distinguish energy loss from hadron
  absorption?
• failure of the "A2/3 power law"
• formation time scaling
• pT-broadening
• Perspectives and conclusions

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Hadronization in nuclear matter
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Short review of eA data
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Hadron formation times
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Can we distinguish energy loss from prehadron
absorption?
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III How to tell energy loss from absorption?
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2) Scaling analysis - example
A.A., nucl-th/0604041, PLB in press
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2) Data vs. theory
A.A., nucl-th/0604041, PLB in press

• Experimental data
• HERMES
• Energy loss models
• AA Arleo realistic geometry (A.A.)
• WW Wang Wang
• Absorption models
• AGMP Accardi, Gruenewald, Muccifora,
  Pirner
• Giessen Falter et al.
• Col.Dip. Kopeliovich et al.

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Perspectives
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Perspectives 4 eRHIC / ELIC

• Can repeat HERMES / JLAB

• Large n-span 10 GeV lt n lt 1600 GeV
• hadronization inside/outside target
• test parton energy loss in cold nuke matter
• test of factorization for FF
• larger phase space for heavy hadrons
• jet physics

• Small x
• heavy quarks ? D, B mesons
• J/y normal suppression
• away-side correlationshadron-hadron, g-hadron

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The end
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Backup slides
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Challenges 3 surface emission
NpartCuCu (0-3) NpartAuAu (35-45) 100
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Will Brooks, JLAB user's group workshop, 13 June
2006
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Will Brooks, JLAB user's group workshop, 13 June
2006
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Will Brooks, JLAB user's group workshop, 13 June
2006