Charmonium correlators and spectral functions at finite temperature

HengTong Ding
2010 Proceedings of The XXVII International Symposium on Lattice Field Theory — PoS(LAT2009)   unpublished
We study charmonium correlators and spectral functions in quenched QCD, using Clover improved Wilson fermions on very fine (0.015 fm) isotropic lattices at 0.75 T c and 1.5T c . We use a new approach to distinguish the zero mode contribution from the other contributions. Once this is removed, we find that the ratios of correlators to reconstructed correlators remain almost unity at all distances. The ground state peaks of spectral functions obtained at 0.75 T c are reliable and robust. The
more » ... nt accuracy and limited number of points in the temporal direction at 1.5 T c do not allow for a reliable conclusion about a possible melting of charmonium states in the QGP. The XXVII International Symposium on Lattice Field Theory
doi:10.22323/1.091.0169 fatcat:bj6hae42s5eglizyyxwa3asqfu