Improvement of the Theta(+) width estimation method on the light cone

Recently, Diakonov and Petrov have suggested a formalism in the chiral quark soliton model allowing one to derive the 3-, 5-, 7-, ...quark wave functions for the octet, decuplet, and antidecuplet. They have used this formalism and many strong approximations in order to estimate the exotic Theta(+) width. The latter has been estimated to similar to 4 MeV. Besides they obtained that the 5-quark component of the nucleon is about 50% of its 3-quark component meaning that relativistic effects are not small. We have improved the technique by taking into account some relativistic corrections and considering the previously neglected 5-quark exchange diagrams. We also have computed all nucleon axial charges. It turns out that exchange diagrams affect very little Diakonov's and Petrov's results while relativistic corrections reduce the Theta(+) width to similar to 2 MeV and the 5- to 3-quark component of the nucleon ratio to 30%.