Extraction of Heavy-Flavor Transport Coefficients in QCD Matter
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Abstract: (Elsevier)
We report on broadly based systematic investigations of the modeling components for open heavy-flavor diffusion and energy loss in strongly interacting matter in their application to heavy-flavor observables in high-energy heavy–ion collisions, conducted within an EMMI Rapid Reaction Task Force framework. Initial spectra including cold-nuclear-matter effects, a wide variety of space-time evolution models, heavy-flavor transport coefficients, and hadronization mechanisms are scrutinized in an effort to quantify pertinent uncertainties in the calculations of nuclear modification factors and elliptic flow of open heavy-flavor particles in nuclear collisions. We develop procedures for error assessments and criteria for common model components to improve quantitative estimates for the (low-momentum) heavy-flavor diffusion coefficient as a long-wavelength characteristic of QCD matter as a function of temperature, and for energy loss coefficients of high-momentum heavy-flavor particles.Note:
- 78 pages, 29 figures, report on an EMMI Rapid Reaction Task Force; v2: small revision, accepted for publication in Nucl. Phys. A
- Heavy flavor
- Transport coefficient
- Diffusion coefficient
- High-energy heavy–ion collisions
- Quark gluon plasma
- heavy quark: diffusion
- quantum chromodynamics: matter
- matter: interaction
- heavy ion: scattering
- energy loss
References(201)
Figures(37)
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