2003/04/15 by T. T. Takahashi, H. Matsufuru, Takahashi, T. T. +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #hep-lat
paper · pdf · doi:10.48550/arxiv.hep-lat/0304009
Proceeding of the TMU-Yale Symposium on ``Dynamics of Gauge Fields'' at Tokyo Metropolitan Univ., Tokyo, December 13-15, 1999. ;2pages, 1figure, 1table
arxiv created 2003/04/15 · arxiv updated 2009/11/30
The static three-quark(3Q) potential is investigated in the SU(3) lattice QCD at the quenched level, using the standard Wilson action with β=5.7 (a≃ 0.2\rm fm) and 123× 24. With the 3Q Wilson loop, the ground-state 3Q potential V\rm 3Q is calculated for 16 patterns of the 3Q configuration, using the smearing technique, which enhances the ground-state overlap of the 3Q operator. With the accuracy better than a few %, the lattice QCD data for V\rm 3Q are well described by a sum of the Coulomb term, a constant and the linear term which is proportional to the minimal length L\rm min of the flux-tube linking the 3 quarks. Our results seem to support the Y-type flux picture rather than Δ-type one. From the comparison of V\rm 3Q with the \rm Q-\rm Q potential, we find the universality of the string tension, σ\rm 3Q≃ σ_\rm QQ as well as the OGE relation on the Coulomb coefficient, A\rm 3Q≃ 1/2A_\rm QQ.