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Decay of Theta+ in a quark model | | A. Hosaka
; M. Oka
; T. Shinozaki
; | | Date: |
9 Sep 2004 | | Journal: | Phys.Rev. D71 (2005) 074021 | | Subject: | hep-ph | | Abstract: | We study the decay of Theta+ in a non-relativistic quark model. The wave function of Theta+ is constructed for the two cases JP = 1/2+- as products of color, spin, flavor and orbital parts respecting total antisymmetrization among the four quarks. We find that for the negative parity Theta+ the width becomes very large which is of order of several hundreds MeV, while it is about a several tens MeV for the positive parity. By assuming additionally diquark correlations, the width is reduced to be of order 10 MeV. It is also pointed out that a similar calculation for 3/2- results in strong suppression of its width. | | Source: | arXiv, hep-ph/0409102 | | Services: | Forum | Review | PDF | Favorites | |
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