Behavior of Charmonium Systems after Deconfinement

Details Behavior of Charmonium Systems after Deconfinement Behavior of Charmonium Systems after Deconfinement

2003-12-23

arxiv.org/abs/hep-lat/0312037v1

Phys.Rev. D69 (2004) 094507

Physics

High Energy Physics

High Energy Physics - Lattice

18 pages, 31 eps figures

Scientific paper

10.1103/PhysRevD.69.094507

We present a study of charmonia in hot gluonic plasma, for temperatures upto three times the deconfinement transition temperature Tc. q \bar{q} systems with quark masses close to the charm mass and different spin-parity quantum numbers were studied on very fine isotropic lattices. The analysis of temporal correlators, and spectral functions constructed from them, shows that the J/psi and eta_c survive up to quite high temperatures, with little observable change up to 1.5 Tc, and then gradually weakening and disappearing by 3 Tc. For the scalar and axial vector channels, serious modifications are induced by the hot medium already close to Tc, possibly dissociating the mesons by 1.1 Tc.

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