Enhanced $J/\psi$ production in deconfined quark matter

By R. Thews, M. Schroedter, J. Rafelski. 2000

432 citations recorded by the source corpus.

In high energy heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven and the Large Hadron Collider at CERN, each central event will contain multiple pairs of heavy quarks. If a region of deconfined quarks and gluons is formed, a mechanism for additional formation of heavy quarkonium bound states will be activated. This is a result of the mobility of heavy quarks in the deconfined region, such that bound states can be formed from a quark and an antiquark that were originally produced in separate incoherent interactions. Model estimates of this effect for J/{psi} production at RHIC indicate that significant enhancements are to be expected. Experimental observation of such enhanced production would provide evidence for deconfinement unlikely to be compatible with competing scenarios.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/62b57dcc5e27b7abb2d038e53ea4e642c3181f6d

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In Nuclear and High Energy Physics

Citations in the corpus

Gauge/String Duality, Hot QCD and Heavy Ion Collisions (2011, background): “At RHIC and even more so at the LHC, however, more than one c c̄ pair is produced per collision, raising the possibility of a new charmonium production mechanism in which a c and a c̄ from different primary c c̄-pairs meet and combine to form a charmonium meson [194].”
Properties of hot and dense matter from relativistic heavy ion collisions (2015, background): “Shortly after the proposal of [45], an alternative idea for production of charmonia was put forward via the kinetic recombination of charm and anti-charm quarks in the QGP [46].”
J/ψ suppression at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV (2016, background): “In order to explain these observations, theoretical models require a contribution from J/ψ regeneration via a recombination mechanism [23,24] between the c and c quarks, during the deconfined phase and/or at the hadronisation of the system, which occurs when its temperature falls below the critical ”
Formation of dense partonic matter in relativistic nucleus–nucleus collisions at RHIC: Experimental evaluation by the PHENIX Collaboration (2004, background): “from total suppression in the traditional Debye screening scenario to enhancement if cc pairs are copiously produced such that J/ψ’s could be formed by the coalescence of uncorrelated c and c quarks [230].”