Charmonium spectral functions in Nf=2 QCD

Details Charmonium spectral functions in Nf=2 QCD Charmonium spectral functions in Nf=2 QCD

2005-09-23

arxiv.org/abs/hep-lat/0509115v1

PoS LAT2005:176,2006

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, talk by JIS at Lattice 2005 (Non-zero temperature and density)

Scientific paper

We report on a study of charmonium at high temperature in 2-flavour QCD. This is the first such study with dynamical fermions. Using an improved anisotropic lattice action, spectral functions are extracted from correlators in the vector and pseudoscalar channels. No signs of medium-induced suppression of the ground states are seen for temperatures up to 1.5T_c, while at T~2T_c there are clear signs of modifications. The current systematic and statistical uncertainties in our data, in particular the relatively coarse lattice and small volume, do not allow us to draw a firm conclusion at this stage.

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