Spin and parity of a possible baryon antidecuplet

Details Spin and parity of a possible baryon antidecuplet Spin and parity of a possible baryon antidecuplet

2004-01-06

arxiv.org/abs/hep-ph/0401023v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 1 figure

Scientific paper

The recently postulated existence of a baryon antidecuplet [1] can be reproduced in strong coupling theory in which a bare baryon spin 1/2 octet interacts with an octet of pseudoscalar mesons. When a suitable mixture of F- and D-type Yukawa couplings is chosen the dressed baryons group themselves into an infinite number of SU(3) multiplets of which the ground state turns out to be a spin 1/2 baryon octet and the first excited state is a spin 3/2 baryon decuplet. Then follows a spin 1/2 baryon antidecuplet. All states of the spectrum have positive parity. If the hypothetical baryon antidecuplet can be identified with the antidecuplet in the strong coupling spectrum then a positive parity and a spin 1/2 is predicted for this multiplet.

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