Variational Monte Carlo study of pentaquark states in a correlated quark model

Details Variational Monte Carlo study of pentaquark states in a correlated quark model Variational Monte Carlo study of pentaquark states in a correlated quark model

2005-12-21

arxiv.org/abs/nucl-th/0512085v1

Physics

Nuclear Physics

Nuclear Theory

3 pages, PANIC05 conference proceedings

Scientific paper

10.1063/1.2220303

Accurate numerical solution of the five-body Schrodinger equation is effected via variational Monte Carlo in a correlated quark model. The spectrum is assumed to exhibit a narrow resonance with strangeness S=+1. A fully antisymmetrized and pair-correlated five-quark wave function is obtained for the assumed non-relativistic Hamiltonian which has spin, isospin, and color dependent pair interactions and many-body confining terms which are fixed by the non-exotic spectra. Gauge field dynamics are modeled via flux tube exchange factors. The energy determined for the ground states with spin-parity 1/2- (1/2+) is 2.22 GeV (2.50 GeV). A lower energy negative parity state is consistent with recent lattice results.

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