The QCD transition temperature: results with physical masses in the continuum limit II.

Details The QCD transition temperature: results with physical masses in the continuum limit II. The QCD transition temperature: results with physical masses in the continuum limit II.

2009-03-24

arxiv.org/abs/0903.4155v1

JHEP 0906:088,2009

Physics

High Energy Physics

High Energy Physics - Lattice

19 pages, 8 figures, 3 tables

Scientific paper

10.1088/1126-6708/2009/06/088

We extend our previous study [Phys. Lett. B643 (2006) 46] of the cross-over temperatures (T_c) of QCD. We improve our zero temperature analysis by using physical quark masses and finer lattices. In addition to the kaon decay constant used for scale setting we determine four quantities (masses of the \Omega baryon, K^*(892) and \phi(1020) mesons and the pion decay constant) which are found to agree with experiment. This implies that --independently of which of these quantities is used to set the overall scale-- the same results are obtained within a few percent. At finite temperature we use finer lattices down to a <= 0.1 fm (N_t=12 and N_t=16 at one point). Our new results confirm completely our previous findings. We compare the results with those of the 'hotQCD' collaboration.

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