Exchange currents in radiative hyperon decays and hyperon charge radii

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dc.creatorWagner, Georg
dc.date1998-10-06
dc.date.accessioned2026-07-07T05:42:40Z
dc.date.available2026-07-07T05:42:40Z
dc.descriptionRadiative decays of decuplet hyperons and octet hyperon charge radii are evaluated in a chiral constituent quark model emphasizing the role of exchange currents. Exchange currents largely cancel for the M1 decay amplitudes, while they dominate the E2 amplitude. Due to the pseudoscalar meson cloud the charge radii of Sigma^- and Xi^- are almost as large as the proton radius, in agreement with recent experimental results from SELEX. Strangeness suppression is weakened by exchange currents for several observables.
dc.description4 pages, 1 eps figure, LaTeX, uses b98proc.cls, contribution to Baryons'98, Bonn, Sept.22-26,1998, proceedings to be published by World Scientific
dc.identifierhttps://arxiv.org/abs/nucl-th/9810017
dc.identifierhttp://arxiv.org/abs/nucl-th/9810017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/83017
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleExchange currents in radiative hyperon decays and hyperon charge radii
dc.typetext

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