Ds Meson as a Quantitative Probe of Diffusion and Hadronization in Nuclear Collisions

Min He, Rainer J. Fries, and Ralf Rapp
Phys. Rev. Lett. 110, 112301 – Published 11 March 2013

Abstract

The modifications of Ds-meson spectra in ultrarelativistic heavy-ion collisions are identified as a quantitative probe of key properties of the hot nuclear medium. The unique valence-quark content of the Ds=cs¯ couples the well-known strangeness enhancement with the collective-flow pattern of primordially produced charm quarks. This idea is illustrated utilizing a consistent strong-coupling treatment with hydrodynamic bulk evolution and nonperturbative T-matrix interactions for both heavy-quark diffusion and hadronization in the quark-gluon plasma (QGP). A large enhancement of the Ds nuclear modification factor at Relativistic Heavy Ion Collider is predicted, with a maximum of 1.51.8 at transverse momenta around 2GeV/c. This is a direct consequence of the strong coupling of the heavy quarks to the QGP and their hadronization via coalescence with strange quarks. We furthermore introduce the effects of diffusion in the hadronic phase and suggest that an increase of the D-meson elliptic flow compared to the Ds can disentangle the transport properties of hadronic and QGP liquids.

  • Figure
  • Figure
  • Received 20 April 2012

DOI:https://doi.org/10.1103/PhysRevLett.110.112301

© 2013 American Physical Society

Authors & Affiliations

Min He*, Rainer J. Fries, and Ralf Rapp

  • Cyclotron Institute and Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-3366, USA

  • *Present address: Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China.

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Vol. 110, Iss. 11 — 15 March 2013

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