2000/06/30 by T. T. Takahashi, H. Matsufuru, Y. Nemoto +1 · 1 citation
Physics and Astronomy · #hep-lat
paper · pdf · doi:10.1103/physrevlett.86.18
published as Phys.Rev.Lett.86:18-21,2001 · 7 pages, 3 figure
arxiv created 2001/02/05 · arxiv updated 2009/11/30
The static three-quark (3Q) potential is measured in the SU(3) lattice QCD with 123 × 24 and β=5.7 at the quenched level. From the 3Q Wilson loop, the 3Q ground-state potential V\rm 3Q is extracted using the smearing technique for the ground-state enhancement. With accuracy better than a few %, V\rm 3Q is well described by a sum of a constant, the two-body Coulomb term and the three-body linear confinement term σ\rm 3Q L\rm min, where L\rm min denotes the minimal length of the color flux tube linking the three quarks. By comparing with the Q- \rm Q potential, we find a universal feature of the string tension, σ\rm 3Q ≃ σ\rm Q Q, as well as the one-gluon-exchange result for the Coulomb coefficient, A\rm 3Q ≃ \frac12 A\rm Q Q.