Measurement of the ω → π 0 e + e − and η → e + e − γ Dalitz decays with the A2 setup at the Mainz Microtron

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dc.contributor.author Adlarson, P.
dc.contributor.author Afzal, F.
dc.contributor.author Aguar-Bartolome, P.
dc.contributor.author Ahmed, Z.
dc.contributor.author Annand, J. R. M.
dc.contributor.author Arends, H. J.
dc.contributor.author Bantawa, K.
dc.contributor.author Beck, R.
dc.date.accessioned 2018-02-08T09:27:36Z
dc.date.available 2018-02-08T09:27:36Z
dc.date.issued 2017-03-22
dc.identifier.citation Physical Review C , 95, 035208 en_US
dc.identifier.issn 2469-9985
dc.identifier.uri http://edoc.unibas.ch/58462/1/PhysRevC.95.035208.pdf
dc.identifier.uri http://repository.seku.ac.ke/handle/123456789/3837
dc.description DOI:https://doi.org/10.1103/PhysRevC.95.035208 en_US
dc.description.abstract The Dalitz decays η → e+e−γ andω → π0e+e− have been measured in the γp → ηp and γp → ωp reactions, respectively, with the A2 tagged-photon facility at the Mainz Microtron. The value obtained for the slope parameter of the electromagnetic transition form factor of η, −2 η = (1.97 ± 0.11tot) GeV−2 , is in good agreement with previous measurements of the η → e+e−γ and η → μ+μ−γ decays. The uncertainty obtained in the value of −2 η is lower than in previous results based on the η → e+e−γ decay. The value obtained for the ω slope parameter, −2 ωπ0 = (1.99 ± 0.21tot) GeV−2 , is somewhat lower than previous measurements based on ω → π0μ+μ−, but the results for the ω transition form factor are in better agreement with theoretical calculations, compared to earlier experiments en_US
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.title Measurement of the ω → π 0 e + e − and η → e + e − γ Dalitz decays with the A2 setup at the Mainz Microtron en_US
dc.type Article en_US


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