The phase transition in QCD with broken SU(2) flavour symmetry
Abstract
We report the first investigation of the QCD transition temperature, Tc, for two flavours of staggered quarks with unequal masses at lattice spacings of 1/4T. On changing the u/d quark mass ratio in such a way that m(pi0)2/m(pi+)2 changes from 1 to 0.78, thus bracketing the physical value of this ratio, we find that Tc remains unchanged in units of both mrho and LambdaMSbar.
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