title: Gluonic excitation of the three-quark system in SU(3) lattice QCD.
abstract: We present the first study of the gluonic excitation in the three-quark (3Q) system in SU(3) lattice QCD with beta=5.8 and 16(3) x 32 at the quenched level. For the spatially fixed 3Q system, we measure the gluonic excited-state potential, which is responsible for the properties of hybrid baryons. The lowest gluonic-excitation energy in the 3Q system is found to be about 1 GeV in the hadronic scale. This large gluonic-excitation energy is expected to bring about the success of the simple quark model without gluonic modes.
authors.affiliation: Research Center for Nuclear Physics, Osaka University, Mihogaoka 10-1, Ibaraki 567-0047, Japan.
authors.forename: Toru T
authors.initials: TT
authors.lastname: Takahashi
authors.forename: Hideo
authors.initials: H
authors.lastname: Suganuma