Search for etab(1S) in Inclusive Radiative Decays of the Upsilon(3S)
A. H. Mahmood, CLEO Collaboration
Abstract
We have searched for the bottomonium etab(1S) via the hindered magnetic dipole (M1) photon transition Upsilon(3S) -> gamma etab(1S). No evidence for such a transition is found in the data sample of 4.7 x 106 Upsilon(3S)'s collected with the CLEO-III detector. We set upper limits on the branching ratio from 9.30 to 9.43 GeV/c2 of etab(1S) masses. These upper limits rule out many previously published phenomenological estimates of the rate for this transition.
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