Heavy-quark dynamics and hadronization in ultrarelativistic heavy-ion collisions: Collisional versus radiative energy loss
By S. Cao, G. Qin, Steffen A. Bass. 2013
208 citations recorded by the source corpus.
We study the dynamics of energy loss and flow of heavy quarks produced in ultra-relativistic heavy-ion collisions within the framework of a Langevin equation coupled to a (2+1)-dimensional viscous hydrodynamic model that simulates the space-time evolution of the produced hot and dense QCD matter. The classical Langevin approach is improved such that, apart from quasi-elastic scatterings, radiative energy loss is incorporated by treating gluon radiation as an additional force term. The hadronization of emitted heavy quarks is simulated via a hybrid fragmentation plus recombination model. Our calculation shows significant contribution from gluon radiation to heavy quark energy loss at high energies, and we find the recombination mechanism is important for heavy flavor meson production at intermediate energies. We present numerical results for the nuclear modification and elliptic flow of D mesons, which are consistent with measurements at both LHC and RHIC; predictions for B mesons are also provided.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/b59da4715fdc2baffc64a1a652c0fc6146839e39
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In Nuclear and High Energy Physics
Citations in the corpus
- Heavy-flavour and quarkonium production in the LHC era: from proton–proton to heavy-ion collisions (2015, methodology): “In [587], the “usual” stochastic forces ~ξ associated to the collisional processes are chosen to be autocorrelated in time according to 〈ξi(t)ξ j(t′)〉 = κδi jδ(t − t′), with a spatial diffusion coefficient Ds = 2T 2 κ set to 6 2πT , while the gluon radiation spectrum is computed with the pQCD higher”
- Jet quenching in high-energy heavy-ion collisions (2015, background): “We can see that for bottom quarks, below around 17 GeV collisional energy loss dominates; above this transition energy, the effect from the finite mass becomes small and radiative components starts to dominate.(74) As we will discuss in Sec.”
- Extraction of heavy-flavor transport coefficients in QCD matter (2018, unknown): “3 GeV and transverse-flow effects simulated through an effective temperature, including effects of hadro-chemistry, supplemented with PYTHIA fragmentation [64].”