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
Externally publishedYes

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mesons
continuums
decay
center of mass
momentum
energy
detectors
cross sections

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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

In: Physical Review Letters, Vol. 87, No. 16, 01.01.2001, p. 538-541.

Research output: Contribution to journalArticle

The BABAR Collaboration. / Measurement of J/ψ production in continuum e+e- annihilations near √s = 10.6 GeV. In: Physical Review Letters. 2001 ; Vol. 87, No. 16. pp. 538-541.
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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.",
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AU - Aubert, B.

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AU - Gaillard, J. M.

AU - Hicheur, A.

AU - Karyotakis, Y.

AU - Lees, J. P.

AU - Robbe, P.

AU - Tisserand, V.

AU - Palano, A.

AU - Chen, G. P.

AU - Chen, J. C.

AU - Qi, N. D.

AU - Rong, G.

AU - Wang, P.

AU - Zhu, Y. S.

AU - Eigen, G.

AU - Reinertsen, P. L.

AU - Stugu, B.

AU - Abbott, B.

AU - Abrams, G. S.

AU - Borgland, A. W.

AU - Breon, A. B.

AU - Brown, D. N.

AU - Button-Shafer, J.

AU - Cahn, R. N.

AU - Clark, A. R.

AU - Fan, Q.

AU - Gill, M. S.

AU - Gritsan, A.

AU - Groysman, Y.

AU - Jacobsen, R. G.

AU - Kadel, R. W.

AU - Kadyk, J.

AU - Kerth, L. T.

AU - Kluth, S.

AU - Kolomensky, Yu G.

AU - Kral, J. F.

AU - Le Clerc, C.

AU - Levi, M. E.

AU - Liu, T.

AU - Lynch, G.

AU - Meyer, A. B.

AU - Momayezi, M.

AU - Oddone, P. J.

AU - Perazzo, A.

AU - Pripstein, M.

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AU - Ronan, M. T.

AU - Varnes, Erich W

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N2 - 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.

AB - 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.

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EP - 541

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

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