Light-front wavefunction dependence of the quark recombination

Abstract

We present an extension of the recombination formalism to analyze the effects from the variation of the hadron wavefunctions. The hadron spectra are sensitive to the shape of the wavefunctions. However, when we fit the wavefunction parameters to the physical observables, such as the average charge radius, the final spectra are very similar each other. We discuss our numerical results in comparison with the published PHENIX and STAR data at RHIC. In the hadron spectra, the recombination of thermal partons dominates at intermediate transverse momentum ($P_T$ = 2 $\sim$ 5 GeV), and the fragmentation dominates at high $P_T$ ($>$ 5 GeV). The yield ratios and the nuclear modification factors for various hadron species are also estimated and compared to the experimental data. We present a new prediction on $\bar{p}/p$ and $K^{-}/K^{+}$ ratios, including the jet quenching effects to the fragmentation mechanism.

26 pages, 7 figures

References in corpus (33)

• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• The PHOBOS Perspective on Discoveries at RHIC
• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Hadronization in heavy ion collisions: Recombination and fragmentation of partons
• Hadron production in heavy ion collisions: Fragmentation and recombination from a dense parton phase
• Elliptic flow at large transverse momenta from quark coalescence
• Suppressed pi^0 Production at Large Transverse Momentum in Central Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Fragmentation Functions for Pions, Kaons, and Protons at Next-to-Leading Order
• Parton coalescence at RHIC
• Identified particle distributions in pp and Au+Au collisions at sqrt{s_NN}=200 GeV
• Lattice Results on QCD Thermodynamics
• High $p_T$ Azimuthal Asymmetry in Non-central A+A at RHIC
• Quenching of hadron spectra in media
• Scaling behavior at high p_T and the p/pi ratio
• Statistical hadronization of charm in heavy-ion collisions at SPS, RHIC and LHC
• Scaling properties of proton and anti-proton production in sqrt(s_NN) = 200 GeV Au + Au collisions
• Recombination of Shower Partons at High $p_T$ in Heavy-Ion Collisions
• QCD Analysis of Unpolarized and Polarized Lambda - Baryon Production in Leading and Next-to-Leading Order
• Phi meson production in Au+Au and p+p collisions at sqrt (s)=200 GeV
• Multi-Strange Baryon Production in Au-Au collisions at sqrt(s_NN) = 130 GeV
• Mid-rapidity $\Lambda$ and $\bar{\Lambda }$ Production in Au+Au Collisions at $\sqrt{s_{{}_{NN}}}=130$ GeV
• Jet Quenching and Azimuthal Anisotropy of Large $p_T$ Spectra in Non-central High-energy Heavy-ion Collisions
• Measurement of the lambda and lambda^bar particles in Au+Au Collisions at sqrt(s_NN)=130 GeV
• Production of phi mesons at mid-rapidity in sqrt(s_NN) = 200 GeV Au+Au collisions at RHIC
• Phenomenology of Jet Quenching in Heavy Ion Collisions
• Jet Quenching and the p-bar >= pi- Anomaly at RHIC
• Large mass dileptons from the passage of jets through quark gluon plasma
• Charge form factors of pseudoscalar mesons
• Modified Fragmentation Function from Quark Recombination
• Delta isobar masses, large N_c relations, and the quark model
• Multiplicities and bulk thermodynamic quantities at \mathversion{bold}{$\sqrt{s_{NN}}=130$} GeV with SHARE

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