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

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Published 29 June 2009 • Published under licence by IOP Publishing Ltd
, , Citation Yasumichi Aoki et al JHEP06(2009)088 DOI 10.1088/1126-6708/2009/06/088

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Author affiliations

1 RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, NY 11973, U.S.A.

2 Bergische Universität Wuppertal, Gaussstrasse 20, D-42119 Wuppertal, Germany

3 Forschungszentrum Jülich, D-52425 Jülich, Germany

4 NIC/DESY Zeuthen Forschungsgruppe, Platanenallee 6, D-15738 Zeuthen, Germany

5 Institute for Theoretical Physics, Eötvös University, Pázmány 1/A, H-1117 Budapest, Hungary

6 Center for Theoretical Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, U.S.A.

Dates

  1. Received 2 April 2009
  2. Accepted 5 June 2009
  3. Published

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1126-6708/2009/06/088

Abstract

We extend our previous study [Phys. Lett. B 643 (2006) 46] of the cross-over temperatures (Tc) 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 Ω baryon, K*(892) and ϕ(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 (Nt = 12 and Nt = 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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10.1088/1126-6708/2009/06/088