Charmonium decays to γπ0, γη, and γη′

Charmonium decays to γπ0, γη, and γη′

Using data acquired with the CLEO-c detector at the CESR e+e- collider, we measure branching fractions for J/ψ, ψ(2S), and ψ(3770) decays to γπ0, γη, and γη′. Defining Rn B[ψ(nS)→γη]/B[ψ(nS)→γη′], we obtain R1=(21.1±0.9)% and, unexpectedly, an order of magnitude smaller limit, R2<1.8% at 90%...

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Detalles Bibliográficos
Autores principales: Pedlar, T, Xavier, J, Cronin-Hennessy, D, Gao, K, Hietala, J, Klein, T, Poling, R, Zweber, P, Dobbs, S, Metreveli, Z, Seth, K, Tan, B, Tomaradze, A, Libby, J, Martin, L, Powell, A, Thomas, C, Wilkinson, G, Mendez, H, Ge, J, Miller, D, Shipsey, I, Xin, B, Adams, G, Hu, D
Formato: Journal article
Lenguaje:English
Publicado: 2009

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