Photoproduction of $Θ^+$ and other pentaquark states

Details Photoproduction of $Θ^+$ and other pentaquark states Photoproduction of $Θ^+$ and other pentaquark states

2004-03-15

arxiv.org/abs/hep-ph/0403159v1

Phys.Lett. B590 (2004) 176-184

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, including 3 tables and 7 figures

Scientific paper

10.1016/j.physletb.2004.03.079

We present constraints on the {\it relative} photoproduction cross sections of positive parity pentaquark states, $\Sigma_5$, $\Lambda_5$, and $N_5$, based on a minimum phenomenology gained in $\gamma N \to K \Theta^+$ and their baryon-meson couplings as in the work of Close and Dudek. The possibility of anomalous signals in $\gamma p \to K^0_S (\Theta^+;\Sigma_d^+)$ is discussed. We emphasise the importance of comparing $\gamma N \to K \Theta^+$ with "conventional" states such as $\gamma N \to K \Sigma(1660)$.

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