Comments on the electromagnetic decay of $\Lambda (1520)$

Abstract

The electromagnetic decay processes of excited hyperon states are a very sensitive probe of the structure of hyperons. We will argue that the recent measurements of electromagnetic decay rates indicate that the wave functions of the hyperon ground states should contain sizeable components of excited quark states (configuration mixing). Flavor-SU(3) is a broken symmetry and it appears that the hyperon wave functions should preferably be written in a $uds$-basis, where only the light $u$ and $d$ quarks are symmetrized, and not in the usual SU(6)-basis.

8 pages

References in corpus (5)

• Helicity amplitudes and electromagnetic decays of hyperon resonances
• Radiative decays of the Sigma0(1385) and Lambda(1520) hyperons
• Radiative Decays of Decuplet Baryons, $\Lambda (1405)$ and $\Lambda (1520)$ Hyperons
• Electromagnetic Decays of Hyperons (II)
• Measurement of the radiative decay width Γ[Λ(1520) --> Λγ] with the SPHINX spectrometer

Cited by in corpus (3)

• The radiative decay of the $\Lambda (1405)$ and its two-pole structure
• Radiative decay into $\gamma P$ of the low lying axial-vector mesons
• Measurement of {\boldmath $J/\psi \to \Xi (1530{)}^{-}{\bar{\Xi }}^{+}$} and evidence for the radiative decay {\boldmath $\Xi (1530{)}^{-}\to \gamma {\Xi }^{-}$}