Measurement of J/ψ production in continuum e+e- annihilations near √s = 10.6 GeV

The BABAR Collaboration

Research output: Contribution to journalArticle

Abstract

The production of J/ψ mesons in continuum e+e- annihilations has been studied with the BABAR detector at energies near the Υ(4S) resonance. The mesons are distinguished from J/ψ production in B decays through their center-of-mass momentum and energy. We measure the cross section e+e- → J/ψX to be 2.52 ± 0.21 ± 0.21pb. We set a 90% C.L. upper limit on the branching fraction for direct Υ(4S) → J/ψX decays at 4.7 × 10-4.

Original languageEnglish (US)
Pages (from-to)538-541
Number of pages4
JournalPhysical review letters
Volume87
Issue number16
DOIs
StatePublished - Jan 1 2001

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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