Pentaquark spectrum in string dynamics
arXiv:hep-ph/0310118 · doi:10.1016/j.physletb.2003.11.010
Abstract
The masses of $uudd\bar s $ and $uudd\bar d$ pentaquarks are evaluated in a framework of the Effective Hamiltonian approach to QCD using the Jaffe-Wilczek $[ud]^2\bar q$ approximation. The mass of the $[ud]^2\bar s$ state is found to be $\sim 300-500$ MeV higher than the observed $Î^+(1540)$ mass.
6 pages, 1 figure included, LaTeX2e; several references added; misprints corrected; to appear in Physics Letters B