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Phase transition in QCD with broken SU ( 2 ) flavor symmetry

2002; American Physical Society; Volume: 66; Issue: 9 Linguagem: Inglês

10.1103/physrevd.66.094510

1538-4500

Rajiv V. Gavai, Sourendu Gupta,

Particle physics theoretical and experimental studies

We report the first investigation of the QCD transition temperature, T_c, 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(pi_0)^2/m(pi_+)^2 changes from 1 to 0.78, thus bracketing the physical value of this ratio, we find that T_c remains unchanged in units of both m_rho and Lambda_MSbar.