Study for the pentaquark potential in SU(3) lattice QCD |
| |
Authors: | Okiharu Fumiko Suganuma Hideo Takahashi Toru T |
| |
Institution: | Department of Physics, Nihon University, Chiyoda, Tokyo, Japan. |
| |
Abstract: | We perform the first study of the static pentaquark (5Q) potential V(5Q) in SU(3) quenched lattice QCD with 16(3) x 32 and beta = 6.0. From the 5Q Wilson loop, V(5Q) is calculated in a gauge-invariant manner, with the smearing method to enhance the ground-state component. V(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 and3Q potentials, we find a universality of the string tension, sigma(QQ) approximately sigma(3Q) approximately sigma(5Q), and the OGE result for Coulomb coefficients. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|