Study for the pentaquark potential in SU(3) lattice QCD

Fumiko Okiharu, Hideo Suganuma, Toru T. Takahashi

Research output: Contribution to journalArticle

57 Citations (Scopus)


We perform the first study of the static pentaquark (5Q) potential V5Q in SU(3) quenched lattice QCD with 163×32 and β=6.0. From the 5Q Wilson loop, V5Q is calculated in a gauge-invariant manner, with the smearing method to enhance the ground-state component. V5Q is well described by the OGE-plus-multi-Y ansatz: a sum of the one-gluon-exchange (OGE) Coulomb term and the multi-Y-type linear term proportional to the minimal total length of the flux tube linking the five quarks. Comparing with QQ̄ and 3Q potentials, we find a universality of the string tension, σQQ̄σ3Qσ5Q, and the OGE result for Coulomb coefficients.

Original languageEnglish
Article number192001
JournalPhysical Review Letters
Issue number19
Publication statusPublished - 20 May 2005

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