Objective
The objective of the present project is a unified description of medium modifications of QCD interactions in a dense nuclear matter and quark gluon plasma. This is a synthetic project which encompasses various medium effects starting from nuclear effects in parton densities, in hard and diffractive scattering off nuclear targets, in formation of hadronic final states and in the in-medium radiation by partons and hadrons. The unifying theoretical basis of the project is a color dipole approach to high energy scattering, which has recently been extended to the Landau-Pomeranchuk-Migdal effect, hadroproduction of heavy flavors in nuclei and nuclear Drell-Yan effect. The members of the team have to their credit seminal works on color dipole picture of deep inelastic scattering, of diffractive processes in QCD and on the theory of the Landau-Pomeranchuk-Migdal effect.
Theoretical knowledge of nuclear modifications of parton structure functions and the theory of the LPM effect are keys to the theory of unltra-relativistic nuclear collisions and to such topical issues as hadronization in nuclear matter and test of the AGK unitarity rules in deep inelastic scattering. The quantitative theory of medium modifications of properties of hadrons and their interaction mechanisms is a key to diagnostics of the hot and dense hadronic matter (quark-gluon plasma?) formed in heavy ion collisions. Collision broadening and smearing also play a crucial role in the in-medium interactions and decays of secondary hadrons.
The work on this multitask project is so organized as to combine the expertise of the team members in extion of each task. The results obtained in one task will serve as an input to other tasks. The previous works on related problems and experience of the collaboration members make feasible completion of the project within the scheduled time interval.
The completion of the project must bring the following major results:
the QCD description of secondary reggeon effects in diffractive DIS,
the development of methods of longitudinal- transverse separation in diffractive DIS,
the evaluation of nuclear modifications of the valence, sea and gluon densities,
detailed phenomenology of the QCD Landau-Pomeranchuk-Migdal effect in cold and hot nuclear medium,
the theory of shadowing and p-perp broadening effects in nuclear hard scattering (Drell- Yan production, dijet production),
analysis of AGK rules and the theory of hadronic final states in non-diffractive DIS,
new determinations of color dipole cross section from vector meson production data,
detailed studies of collision broadening and smearing in photoapsorption and hadroproduction on nuclei.
The chosen jects are at the forefront of modern nuclear and high-energy physics, the early works by team members are actively used in the analysis and interpretation of the data from major accelerator centers and active interaction with the experimental teams working at HERA, MAMI, COSY, CERN, FERMILAB, TJNAF is anticipated.
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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Funding Scheme
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Coordinator
52425 Jülich
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.