Determining the $Θ^+$ quantum numbers through the $K^+p\to π^+K^+n$ reaction

Details Determining the $Θ^+$ quantum numbers through the $K^+p\to π^+K^+n$ reaction Determining the $Θ^+$ quantum numbers through the $K^+p\to π^+K^+n$ reaction

2003-07-28

arxiv.org/abs/nucl-th/0307105v2

Phys.Lett. B579 (2004) 290-298

Physics

Nuclear Physics

Nuclear Theory

21 pages, 8 figures, Version to appear in Phys. Lett. B

Scientific paper

We study the $K^+p\to \pi^+K^+n$ reaction with some kinematics suited to the production of the $\Theta^+$ resonance recently observed. We show that, independently of the quantum numbers of the $\Theta^+$, a resonance signal is always observed in the $K^+$ forward direction. In addition, we also show how a combined consideration of the strength at the peak, and the angular dependence of polarization observables can help determine the $\Theta^+$ quantum numbers using the present reaction.

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