2022-05-23T03:37:30Zhttps://niigata-u.repo.nii.ac.jp/oaioai:niigata-u.repo.nii.ac.jp:000024222021-03-01T20:35:13ZStudy for the Pentaquark Potential in SU(3) Lattice QCDStudy for the Pentaquark Potential in SU(3) Lattice QCDOkiharu, Fumiko25985Suganuma, Hideo25986Takahashi, Toru T.25987We 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 QQ¯¯¯ and 3Q potentials, we find a universality of the string tension, σQQ¯¯¯≃σ3Q≃σ5Q, and the OGE result for Coulomb coefficients.journal articleAmerican Physical Society2005-05application/pdfPhysical Review Letters1920019414Physical Review LettersAA0077367900319007https://niigata-u.repo.nii.ac.jp/record/2422/files/94_192001_1-4.pdfenginfo:doi/10.1103/PhysRevLett.94.192001Copyright(C)2005 The American Physical Society