Limits on J ψ and Υ{hooked} production in e + e - interactions at s = 29 GeV

Abstract

A search has been made for the inclusive production of J ψ and Υ{hooked} mesons in e+e- interactions at 29 GeV, via their decay into two leptons. No signal is observed in the J ψ region, nor in the Υ{hooked} region. The limits on the cross sections are σ < 4.4 × 10-36cm2, and σ < 4.7 × 10-36 cm2. The same data yield limits on the branching ratios for the b quark BR < 4.9% and BR < 0.8%. © 1983.

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Gary Hanson
Louisiana State University, Shreveport

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