MEASUREMENT OF THE RADIATIVE WIDTH OF THE ETA'(958) IN 2-PHOTON INTERACTIONS

MEASUREMENT OF THE RADIATIVE WIDTH OF THE ETA'(958) IN 2-PHOTON INTERACTIONS

The reaction e+e-→e+e-η′(9 58) has been observed by detecting the final state π+π-γ. The two-photon width of the η′ has been measured to be Γ(η′→γγ) = 5.1±0.4±0.7 keV. A search for the ι(1440) has been made in the ρ{variant}0γ final state. An upper limit has been obtained for the product Γ(ι(1440) →...

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Bibliografiske detaljer
Main Authors: Althoff, M, Braunschweig, W, Kirschfink, F, Lubelsmeyer, K, Martyn, H, Rosskamp, P, Sander, H, Schmitz, D, Siebke, H, Wallraff, W, Eisenmann, J, Fischer, H, Hartmann, H, Jocksch, A, Knop, G, Kopke, L, Kolanoski, H, Kuck, H, Mertens, V, Wedemeyer, R, Eskreys, A, Gather, K, Hultschig, H, Joos, P, Kotz, U
Format: Journal article
Sprog:English
Udgivet: 1984
Beskrivelse
Summary:The reaction e+e-→e+e-η′(9 58) has been observed by detecting the final state π+π-γ. The two-photon width of the η′ has been measured to be Γ(η′→γγ) = 5.1±0.4±0.7 keV. A search for the ι(1440) has been made in the ρ{variant}0γ final state. An upper limit has been obtained for the product Γ(ι(1440) → γ)gg), B (ι→ρ{variant}0γ) < 1.5 keV (95%CL). © 1984.

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