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- W2085364020 abstract "The static three-quark (3Q) potential is studied in detail using SU(3) lattice QCD with $12^3 times 24$ at $beta=5.7$ and $16^3 times 32$ at $beta=5.8$, 6.0 at the quenched level. For more than 300 different patterns of the 3Q systems, we perform the accurate measurement of the 3Q Wilson loop with the smearing method, which reduces excited-state contaminations, and present the lattice QCD data of the 3Q ground-state potential $V_{rm 3Q}$. We perform the detailed fit analysis on $V_{rm 3Q}$ in terms of the Y-ansatz both with the continuum Coulomb potential and with the lattice Coulomb potential, and find that the lattice QCD data of the 3Q potential $V_{rm 3Q}$ are well reproduced within a few % deviation by the sum of a constant, the two-body Coulomb term and the three-body linear confinement term $sigma_{rm 3Q} L_{rm min}$, with $L_{rm min}$ the minimal value of the total length of color flux tubes linking the three quarks. From the comparison with the Q-$bar {rm Q}$ potential, we find a universality of the string tension as $sigma_{rm 3Q} simeq sigma_{rm Q bar Q}$ and the one-gluon-exchange result for the Coulomb coefficients as $A_{rm 3Q} simeq frac12 A_{rm Q bar Q}$. We investigate also the several fit analyses with the various ansatze: the Y-ansatz with the Yukawa potential, the $Delta$-ansatz and a more general ansatz including the Y and the $Delta$ ansatze in some limits. All these fit analyses support the Y-ansatz on the confinement part in the 3Q potential $V_{rm 3Q}$, although $V_{rm 3Q}$ seems to be approximated by the $Delta$-ansatz with $sigma_Delta simeq 0.53 sigma$." @default.
- W2085364020 created "2016-06-24" @default.
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- W2085364020 date "2002-06-25" @default.
- W2085364020 modified "2023-10-17" @default.
- W2085364020 title "Detailed analysis of the three-quark potential in SU(3) lattice QCD" @default.
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- W2085364020 doi "https://doi.org/10.1103/physrevd.65.114509" @default.
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