$Measurement of the ηb(1S) mass and the branching fraction for Υ(3S)→γηb(1S)$

Measurement of the ηb(1S) mass and the branching fraction for Υ(3S)→γηb(1S)

We report evidence for the ground state of bottomonium, ηb(1S), in the radiative decay Υ(3S)→γηb in e+e- annihilation data taken with the CLEO III detector. Using 6×106 Υ(3S) decays, and assuming Γ(ηb)=10±5MeV/c2, we obtain B(Υ(3S)→γηb)=(7.1±1.8±1.3)×10 -4, where the first error is statistical and t...

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Bibliographic Details
Main Authors:	Bonvicini, G, Cinabro, D, Lincoln, A, Smith, M, Zhou, P, Zhu, J, Naik, P, Rademacker, J, Asner, D, Edwards, K, Reed, J, Robichaud, A, Tatishvili, G, White, E, Briere, R, Vogel, H, Onyisi, P, Rosner, J, Alexander, J, Cassel, D, Ehrlich, R, Fields, L, Galik, R, Gibbons, L, Gray, S
Format:	Journal article
Language:	English
Published:	2010

Measurement of the ηb(1S) mass and the branching fraction for Υ(3S)→γηb(1S)

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