Heavy quark free energies for three quark systems at finite temperature

Details Heavy quark free energies for three quark systems at finite temperature Heavy quark free energies for three quark systems at finite temperature

2007-10-26

arxiv.org/abs/0710.5147v1

Phys.Rev.D77:074504,2008

Physics

High Energy Physics

High Energy Physics - Lattice

11 pages, 17 figures

Scientific paper

10.1103/PhysRevD.77.074504

We study the free energy of static three quark systems in singlet, octet, decuplet and average color channels in the quenched approximation and in 2-flavor QCD at finite temperature. We show that in the high temperature phase singlet and decuplet free energies of three quark systems are well described by the sum of the free energies of three diquark systems plus self energy contributions of the three quarks. In the confining low temperature phase we find evidence for a Y-shaped flux tube in SU(3) pure gauge theory, which is less evident in 2-flavor QCD due to the onset of string breaking. We also compare the short distance behavior of octet and decuplet free energies to the free energies of single static quarks in the corresponding color representations.

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