The Uniqueness of the $Θ^+$ Pentaquark

Details The Uniqueness of the $Θ^+$ Pentaquark The Uniqueness of the $Θ^+$ Pentaquark

2004-10-05

arxiv.org/abs/hep-ph/0410074v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 5 figures, 19th European Few Body Conference

Scientific paper

10.1063/1.1932909

The existence of the $\Theta^+$ pentaquark requires a peculiar mechanism to explain its stability. Looking at quark clusters, notably diquark and triquark configurations, such a mechanism may be found in the color-magnetic interaction between quarks. It is possible to understand why the $\Theta^+$ is unique. Chiral dynamics, in particular the ease of pion emission, will render other members of the same flavor antidecuplet, such as the $\Xi^{--}$ very unstable.

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