2006/05/31 by R. L. Thews, R L Thews · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1088/0954-3899/32/12/s49
published as J.Phys. G32 (2006) S401-S409 · Based on invited talk at Strangeness in Quark Matter 2006, UCLA, March 26-31, 2006. Clarifying remarks added in published journal version
arxiv created 2006/07/21 · openalex publication_date 2006/11/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
We confront preliminary RHIC data on J /ψ production in nuclear interactions with expectations which follow in scenarios involving charm quark recombination in a region of colour deconfinement. The focus is on transverse momentum and rapidity spectra of the J /ψ, which carry a memory of the spectra of the charm quarks. In such a scenario, one predicts that both spectra will be narrower than those expected without recombination. Preliminary results for the transverse momentum spectra point towards a preference for the recombination picture, while the rapidity spectra do not exhibit any narrowing within present large uncertainties. We present new calculations in the recombination model for the centrality behaviour of these signals, which map out the necessary experimental precision required for a definitive test.