Hadronic Shift of the Six Quark Dibaryon lambda lambda

摘要

A detailed investigation of the influence of the hadronic channels lambda lambda , N> and sigma sigma on the mass of the doubly strange lambda lambda bag is presented. The following positions of the bag-model eigenstate are considered: (1) below the lambda lambda threshold, (2) between the thresholds of the lambda lambda and N> channels, (3) between the thresholds N> and sigma sigma , (4) and the continuous spectrum of all hadronic channels. It is shown that the coupling to the hadronic channels do have a marked influence on the position of the bag-model state. In case (1) the bag model state is pulled down in energy by 150-200 MeV, in cases (2) and (3) the state is shifted down into the region below the lambda lambda threshold, and in case (4) the state may become broad. (Atomindex citation 15:029750)