6533b7d6fe1ef96bd1266f83
RESEARCH PRODUCT
Testing the nature of the Λ(1520)-resonance in proton-induced production
E. OsetUlf-g. MeißnerC. HanhartLuis Rocasubject
pair production [K]Nuclear and High Energy PhysicsParticle physicsp p --> Lambda p K+ 2pi0Nuclear Theorypair production [pi0]coupled channel [partial wave analysis]Lambdaunitarityddc:530(p K-) [mass spectrum]numerical calculationsexclusive reaction [p p]Physicsassociated production [Lambda](Lambda 2pi0) [mass spectrum]FísicaSigmaObservablehadroproduction [K+]p p --> 2p K+ K-Bethe-Salpeter equationcoupling [Lambda(1520)]ratio [mass spectrum]High Energy Physics - PhenomenologyFormalism (philosophy of mathematics)hadronic decay [Lambda(1520)]description
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-01-01 | The European Physical Journal A |