Parton recombination at all $p_T$

Abstract

Hadron production at all $p_T$ in heavy-ion collisions in the framework of parton recombination is reviewed. It is shown that the recombination of thermal and shower partons dominates the hadron spectra in the intermediate $p_T$ region. In $d+Au$ collisions, the physics of particle production at any $\eta$ is basically the same as at $\eta =0$. The Cronin effect is described as a result of the final-state instead of the initial-state interaction. The suppression of $R_{CP}$ at high $\eta$ is due to the reduction of the soft parton density on the deuteron side, thus resulting in less pions produced by recombination, an explanation that requires no new physics. In $Au+Au$ collisions large $p/\pi$ ratio is obtained because the thermal partons can contribute to the formation of proton more than they do to the pion.

12 pages + 5 figures. Invited talk at Hard Probes 2004

References in corpus (4)

• Recombination of Shower Partons at High $p_T$ in Heavy-Ion Collisions
• Recombination of shower partons in fragmentation processes
• Final-State Interaction as the Origin of the Cronin Effect
• $\pi /K/p$ production and Cronin effect from p+p, d+Au and Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV from the PHENIX experiment

Cited by in corpus (7)

• Recent results in relativistic heavy ion collisions: from ``a new state of matter'' to "the perfect fluid"
• Pseudorapidity shape of elliptic flow as signature for fast equilibration in relativistic heavy-ion collisions at energies up to sqrt(s) = 200 GeV
• Anisotropic flow in Pb+Pb collisions at LHC from the quark gluon string model with parton rearrangement
• Successes and failures with hard probes
• "Naked" Cronin effect in A+A collisions from SPS to RHIC
• Parton rearrangement and fast thermalization in heavy-ion collisions at RHIC and LHC energies
• Open and Hidden Charm Production in d$A$ Collisions at RHIC and LHC