Testing the nature of the $Λ$(1520) in the $J/ψ\to\barΛK^-p$ and $J/ψ\to\barΛπ^+π^-Λ$ reactions

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dc.creatorGeng, L. S.
dc.creatorOset, E.
dc.creatorZou, B. S.
dc.date2008-07-30
dc.date2008-11-16
dc.date.accessioned2026-07-07T12:15:08Z
dc.date.available2026-07-07T12:15:08Z
dc.descriptionWe study the reactions $J/ψ\to\barΛK^-p$ and $J/ψ\to\barΛπ^+π^-Λ$ with a unitary chiral approach. We predict the ratio of the invariant mass distributions of these two reactions at the $Λ(1520)$ peak position, which is free of the unknown production mechanism and reflects only the properties of the $Λ(1520)$. An experimental measurement of this ratio will provide the couplings of the $Λ(1520)$ to its decay channels, allowing to test the predictions of the chiral unitary approach on this resonance, which appears as dynamically generated in that approach.
dc.description7 pages, 6 figures, version to appear in EPJA
dc.identifierhttps://arxiv.org/abs/0807.4798
dc.identifierhttp://arxiv.org/abs/0807.4798
dc.identifierEur.Phys.J.A38:239-245,2008
dc.identifierdoi:10.1140/epja/i2008-10673-7
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211420
dc.subjectHigh Energy Physics - Phenomenology
dc.titleTesting the nature of the $Λ$(1520) in the $J/ψ\to\barΛK^-p$ and $J/ψ\to\barΛπ^+π^-Λ$ reactions
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