Heavy-quark probes of the quark-gluon plasma and interpretation of recent data taken at the BNL Relativistic Heavy Ion Collider

By H. Hees, V. Greco, R. Rapp. 2005

261 citations recorded by the source corpus.

Thermalization and collective flow of charm (c) and bottom (b) quarks in ultrarelativistic heavy-ion collisions are evaluated based on elastic parton rescattering in an expanding quark-gluon plasma (QGP). We show that resonant interactions in a strongly interacting QGP (sQGP), as well as parton coalescence, can play an essential role in the interpretation of recent data from the BNL Relativistic Heavy-Ion Collider (RHIC), and thus illuminate thenatureofthesQGPanditshadronization.Ourmainassumption,motivatedbyrecentfindingsinlatticequantum chromodynamics, is the existence of D -a ndB-meson states in the sQGP, providing resonant cross sections for heavy quarks. Pertinent drag and diffusion coefficients are implemented into a relativistic Langevin simulation to compute transverse-momentum spectra and azimuthal asymmetries (v2 )o fb -a ndc-quarks in Au-Au collisions at RHIC. After hadronization into D -a ndB-mesons using quark coalescence and fragmentation, associated electron-decay spectra and v2 are compared to recent RHIC data. Our results suggest a reevaluation of radiative and elastic quark energy-loss mechanisms in the sQGP.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/247619cd083e38f4b7799c9dae40a632ade6a9bb

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In Nuclear and High Energy Physics

1. Jörn Dunkel
2. P. Hänggi
3. S. Gubser
4. S. Hartnoll
5. G. Horowitz
6. E. Kiritsis
7. B. Kol
8. V. Hubeny

Citations in the corpus

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• Momentum fluctuations of heavy quarks in the gauge-string duality (2006, background): “more successful phenomenological theories [ 35 ] of heavy-quark transport.”