Title

Observation of χb production in the exclusive reaction Υ{hooked}′→γγχb→γγΥ{hooked}→γγ(e+e-orμ+μ-)

Document Type

Article

Publication Date

11-3-1983

Abstract

We report on the observation of 1 3PJ (χb) production in the reaction Υ{hooked}′→γχb→γγΥ{hooked}→γγ(e+e- or μ+μ-). The data were recorded with the nonmagnetic CUSB detector at the Cornell Electron Storage Ring, CESR. We observe 124 γγ events with either an electron or muon pair in the final state. In the γγ correlation plot about 40% of the events cluster around (120, 430) MeV. © 1983.

Publication Source (Journal or Book title)

Physics Letters B

First Page

439

Last Page

443

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