Interplay between soft and hard hadronic components for identified hadrons in relativistic heavy ion collisions

Abstract

We investigate the transverse dynamics in Au+Au collisions at \sqrt{s_NN}=200 GeV by emphasis upon the interplay between soft and hard components through p_T dependences of particle spectra, ratios of yields, suppression factors, and elliptic flow for identified hadrons. From hydrodynamics combined with traversing minijets which go through jet quenching in the hot medium, we calculate interactions of hard jets with the soft hydrodynamic components. It is shown by the explicit dynamical calculations that the hydrodynamic radial flow and the jet quenching of hard jets are the keys to understand the differences among the hadron spectra for pions, kaons, and protons. This leads to the natural interpretation for N_p/N_π~ 1, R_{AA} >~ 1 for protons, and v_2^p > v_2^πrecently observed in the intermediate transverse momentum region at Relativistic Heavy Ion Collider (RHIC).

11 pages, 9 figures; some references added; title changed, some data points included in figures

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Cited by in corpus (60)

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• Spectra and ratios of identified particles in Au+Au and d+Au collisions at sqrt(s_NN)=200 GeV
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• Centrality and transverse momentum dependence of elliptic flow of multi-strange hadrons and $\varphi$ meson in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
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• Constraint fitting of experimental data with a jet quenching model embedded in a hydrodynamical bulk medium
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• Interplay between core and corona components in high-energy nuclear collisions
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• Transverse momentum spectra of hadrons in high energy pp and heavy ion collisions
• Nuclear-modification factor of charged hadrons at forward and backward rapidity in $p$$+$Al and $p$$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Exploring the QCD landscape with high-energy nuclear collisions
• The QCD confinement transition: hadron formation
• Azimuthal anisotropy measurements of strange and multistrange hadrons in U+U collisions at $\sqrt{s_{NN}}=193$ GeV at the BNL Relativistic Heavy Ion Collider
• Correlated Production of p and p^bar in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Kaon and Lambda Production at Intermediate $p_T$: Insights into the Hadronization of the Bulk Partonic Matter Created in Au+Au Collisions at RHIC
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• Azimuthal anisotropy measurement of (multi-)strange hadrons in Au+Au collisions at $\sqrt{s_{\text{NN}}}$ = 54.4 GeV
• Non-equilibrium components in very low transverse momentum region in high-energy nuclear collisions
• CGC, Hydrodynamics, and the Parton Energy Loss
• Hydrodynamic afterburner for the CGC at RHIC
• Empirical Constraints on Parton Energy Loss in Nucleus-Nucleus Collisions at RHIC
• Hadron-string cascade versus hydrodynamics in Cu+Cu collisions at $\sqrt{s_{NN}}=200$ GeV
• Quark Matter 2005: Experimental Conference Summary
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• Radial flow afterburner for event generators and the baryon puzzle
• Rapidity dependence of the proton-to-pion ratio in Au+Au and p+p collisions at sqrt(s_NN) = 62.4 and 200 GeV
• Transverse Spectra of Hadrons in Central $AA$ Collisions at RHIC and LHC from pQCD+Saturation+Hydrodynamics and from pQCD+Energy Losses
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• Hard and soft probe - medium interactions in a 3D hydro+micro approach at RHIC
• Hadron Production at Intermediate $p_T$ at RHIC
• The rapidity dependence of the proton-to-pion ratio in Au+Au and p+p collisions at sqrt(sNN) = 62.4 and 200 GeV
• The domain of soft hadrons in transverse momentum space in high energy collisions
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• Elliptic flow of charged hadrons in d+Au collisions at $\sqrt{s_{NN}}=$ 200 GeV using a multi-phase transport model