Radiative corrections for the decay Σ° → Λe+e−

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Radiative corrections for the decay Σ° → Λe+e−

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dc.contributor.author Husek, Tomas
dc.contributor.author Leupold, Stefan
dc.date.accessioned 2020-06-01T09:51:34Z
dc.date.available 2020-06-01T09:51:34Z
dc.date.issued 2020
dc.identifier.uri https://hdl.handle.net/10550/74794
dc.description.abstract Electromagnetic form factors serve to explore the intrinsic structure of nucleons and their strangeness partners. With electron scattering at low energies the electromagnetic moments and radii of nucleons can be deduced. The corresponding experiments for hyperons are limited because of the unstable nature of the hyperons. Only for one process this turns to an advantage: the decay of the neutral Sigma hyperon to a Lambda hyperon and a real or virtual photon. Due to limited phase space the effects caused by the Sigma-to-Lambda transition form factors compete with the QED radiative corrections for the decay Σ^0→Λe+e−. These QED corrections are addressed in the present work, evaluated beyond the soft-photon approximation, i.e., over the whole range of the Dalitz plot and with no restrictions on the energy of the radiative photon.
dc.language.iso eng
dc.relation.ispartof European Physical Journal C, 2020, vol. 80, num. 3, p. 218
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Husek, Tomas Leupold, Stefan 2020 Radiative corrections for the decay Σ° → Λe+e− European Physical Journal C 80 3 218
dc.subject Partícules (Física nuclear)
dc.subject Teoria electromagnètica
dc.title Radiative corrections for the decay Σ° → Λe+e−
dc.type info:eu-repo/semantics/article
dc.date.updated 2020-06-01T09:51:35Z
dc.identifier.doi https://doi.org/10.1140/epjc/s10052-020-7710-7
dc.identifier.idgrec 139234


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