Testing the nature of the $Λ(1520)$ resonance in proton-induced production

Details Testing the nature of the $Λ(1520)$ resonance in proton-induced production Testing the nature of the $Λ(1520)$ resonance in proton-induced production

2006-02-06

arxiv.org/abs/nucl-th/0602016v1

Eur.Phys.J. A27 (2006) 373-380

Physics

Nuclear Physics

Nuclear Theory

8 pages, 4 figures. Submitted to Eur.Phys.J.A

Scientific paper

10.1140/epja/i2006-10009-9

The $\Lambda(1520)$ resonance has been recently studied in a unitarized coupled channel formalism with $\pi\Sigma(1385)$, $K\Xi(1530)$, $\bar{K}N$ and $\pi\Sigma$ as constituents blocks. We provide a theoretical study of the predictions of this model in physical observables of the $pp\to pK^+K^-p$ and $pp\to pK^+\pi^0\pi^0\Lambda$ reactions. In particular, we show that the ratio between the $\pi^0\pi^0\Lambda$ and $K^-p$ mass distributions can provide valuable information on the ratio of the couplings of the $\Lambda(1520)$ resonance to $\pi\Sigma(1385)$ and $\bar{K}N$ that the theory predicts. Calculations are done for energies which are accessible in an experimental facility like COSY at J\"ulich or the developing CSR facility at Lanzhou.

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