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Are there non-strange low-lying penta-quarks and can we understand their width | | R.W. Gothe
; S. Nussinov
; | | Date: |
22 Aug 2003 | | Subject: | hep-ph nucl-th | | Abstract: | We argue that the lightest isospin 1/2 partners of the Z^+(1530) s(bar)uudd penta-quark predicted by Diakonov, Petrov and Polyakov are not the N(1710) mixed anti-decuplet states, but the pure non-strange u(bar)(ud)(ud) and d(bar)(ud)(ud) penta-quark states which may lie as low as 1200 MeV. The expected low width of a few MeV of such a putative state may explain why it was missed in phase shift analyzes of pion-nucleon scattering. | | Source: | arXiv, hep-ph/0308230 | | Services: | Forum | Review | PDF | Favorites | |
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