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The European Physical Journal C

, Volume 61, Issue 4, pp 799–806 | Cite as

T-matrix approach to heavy quark diffusion in the QGP

Regular Article - Theoretical Physics

Abstract

We assess transport properties of heavy quarks in the quark–gluon plasma (QGP) using static heavy-quark (HQ) potentials from lattice-QCD calculations in a Brueckner many-body T-matrix approach to evaluate elastic heavy-quark–light-quark scattering amplitudes. In the attractive meson and diquark channels, resonance states are formed for temperatures up to ∼1.5T c, increasing pertinent drag and diffusion coefficients for heavy-quark rescattering in the QGP beyond the expectations from perturbative-QCD calculations. We use these transport coefficients, complemented with perturbative elastic HQ gluon scattering, in a relativistic Langevin simulation to obtain HQ p t distributions and elliptic flow (v 2) under conditions relevant for the hot and dense medium created in ultrarelativistic heavy-ion collisions. The heavy quarks are hadronized to open-charm and -bottom mesons within a combined quark-coalescence fragmentation scheme. The resulting single-electron spectra from their semileptonic decays are confronted with recent data on “non-photonic electrons” in 200 A GeV Au–Au collisions at the Relativistic Heavy-Ion Collider (RHIC).

Keywords

Heavy Quark Star Collaboration Bottom Meson Quark Coalescence Langevin Simulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2008

Authors and Affiliations

  • H. van Hees
    • 1
  • M. Mannarelli
    • 2
  • V. Greco
    • 3
    • 4
  • R. Rapp
    • 5
  1. 1.Institut für Theoretische PhysikJustus-Liebig-Universität GiessenGiessenGermany
  2. 2.Instituto de Ciencias del Espacio (IEEC/CSIC)Bellaterra (Barcelona)Spain
  3. 3.INFN-LNSCataniaItaly
  4. 4.Dipartimento Interateneo di Fisica di BariBariItaly
  5. 5.Cyclotron Institute and Physics DepartmentTexas A&M UniversityCollege StationUSA

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