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arXiv · 1111.2218

Are there three Xi(1950) states?

M. Pavon Valderrama·Ju-Jun Xie·J. Nieves
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Abstract

Different experiments on hadron spectroscopy have long suspected the existence of several cascade states in the $1900-2000 {\rm MeV}$ region. They are usually labeled under the common name of $\Xi (1950)$. As we argue here, there are also theoretical reasons supporting the idea of several $\Xi (1950)$ resonances. In particular, we propose the existence of three $\Xi(1950)$ states: one of these states would be part of a spin-parity $(1/2)^{-}$ decuplet and the other two probably would belong to the $(5/2)^{+}$ and $(5/2)^{-}$ octets. We also identify which decay channels are the more appropriate for the detection of each of the previous states.

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M. Pavon Valderrama, Ju-Jun Xie, J. Nieves. 2011-11-09. Are there three Xi(1950) states?. https://doi.org/10.1103/physrevd.85.017502

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