Second-order Chapman-Enskog viscous corrections suppress heavy-quark drag, induce nontrivial transverse diffusion, and boost early-time dilepton yields relative to first-order or Grad corrections, with the size of the effect set by the interplay between correction momentum dependence and observable
Dilepton emission in high-energy heavy-ion collisions with viscous hydrodynamics
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abstract
The invariant mass spectrum and the elliptic flow of lepton pairs produced in relativistic heavy-ion collisions at RHIC are studied with viscous hydrodynamics. The effects of viscous corrections on dilepton observables are explored. The lepton pairs originating from charm quarks evolving in the viscous background are seen to be a good probe of quark energy loss and gain, as quantified by the dilepton spectrum and by the dilepton elliptic flow.
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Spin dynamics in dissipative hydrodynamics enhance thermal dilepton yields relative to standard viscous hydrodynamics in Bjorken flow, with the enhancement depending on spin transport coefficients.
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Observable Dependence of Viscous Corrections in QGP: Heavy Quarks and Dileptons in Chapman--Enskog Theory
Second-order Chapman-Enskog viscous corrections suppress heavy-quark drag, induce nontrivial transverse diffusion, and boost early-time dilepton yields relative to first-order or Grad corrections, with the size of the effect set by the interplay between correction momentum dependence and observable
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Dissipative spin hydrodynamics in Bjorken flow and thermal dilepton production
Spin dynamics in dissipative hydrodynamics enhance thermal dilepton yields relative to standard viscous hydrodynamics in Bjorken flow, with the enhancement depending on spin transport coefficients.