학술논문
Extraction of heavy-flavor transport coefficients in QCD matter
Document Type
article
Author
Rapp, R; Gossiaux, PB; Andronic, A; Averbeck, R; Masciocchi, S; Beraudo, A; Bratkovskaya, E; Braun-Munzinger, P; Cao, S; Dainese, A; Das, SK; Djordjevic, M; Greco, V; He, M; van Hees, H; Inghirami, G; Kaczmarek, O; Lee, Y-J; Liao, J; Liu, SYF; Moore, G; Nahrgang, M; Pawlowski, J; Petreczky, P; Plumari, S; Prino, F; Shi, S; Song, T; Stachel, J; Vitev, I; Wang, X-N
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Abstract
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.