Study for the Pentaquark Potential in SU(3) Lattice QCD

Journal Article · Fri May 20 04:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.94.192001· OSTI ID:20696277

Okiharu, Fumiko; Suganuma, Hideo; Takahashi, Toru T ^[1]

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1. Department of Physics, Nihon University, 1-8-14 Kanda-Surugadai, Chiyoda, Tokyo 101-8308 (Japan)

We perform the first study of the static pentaquark (5Q) potential V{sub 5Q} in SU(3) quenched lattice QCD with 16{sup 3}x32 and {beta}=6.0. From the 5Q Wilson loop, V{sub 5Q} is calculated in a gauge-invariant manner, with the smearing method to enhance the ground-state component. V{sub 5Q} 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, {sigma}{sub QQ}{approx_equal}{sigma}{sub 3Q}{approx_equal}{sigma}{sub 5Q}, and the OGE result for Coulomb coefficients.

• OSTI ID: 20696277
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 94; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
GAUGE INVARIANCE
GLUONS
GROUND STATES
HYPERONS
POTENTIALS
QUANTUM CHROMODYNAMICS
QUARKS
RESONANCE
SU-3 GROUPS
WILSON LOOP