Observation of Upsilon(2S)-->etaUpsilon(1S) and search for related transitions.

Observation of Upsilon(2S)-->etaUpsilon(1S) and search for related transitions.

We report the first observation of Upsilon(2S)-->etaUpsilon(1S), with a branching fraction B=(2.1(-0.6)+0.7(stat)+/-0.3(syst)) x 10(-4) and a statistical significance 5.3sigma. Data were acquired with the CLEO III detector at the CESR e+e(-) symmetric collider. This is the first process obser...

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Những tác giả chính: He, Q, Insler, J, Muramatsu, H, Park, C, Thorndike, E, Yang, F, Artuso, M, Blusk, S, Khalil, S, Li, J, Mountain, R, Nisar, S, Randrianarivony, K, Sultana, N, Skwarnicki, T, Stone, S, Wang, J, Zhang, L, Bonvicini, G, Cinabro, D, Dubrovin, M, Lincoln, A, Naik, P, Rademacker, J, Asner, D
Định dạng: Journal article
Ngôn ngữ:English
Được phát hành: 2008

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