In-medium formation of quarkonium

Abstract

We confront preliminary RHIC data on J/Psi production in nuclear interactions with expectations which follow in scenarios involving charm quark recombination in a region of color deconfinement. The focus is on transverse momentum and rapidity spectra of the J/Psi, 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 toward 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 behavior of these signals, which map out the necessary experimental precision required for a definitive test.

Based on invited talk at Strangeness in Quark Matter 2006, UCLA, March 26-31, 2006. Clarifying remarks added in published journal version

Cited by in corpus (4)

• The widths of quarkonia in quark gluon plasma
• The thermal width of heavy quarkonia moving in quark gluon plasma
• Charmed Hadrons from Strangeness-rich QGP
• J/psi production from charm coalescence in relativistic heavy ion collisions