Measurement of $J/\psi$ production in continuum $e^+e^-$ annihilations near $\sqrt{s}=10.6$ GeV

Aubert, Bernard; Boutigny, D.; Gaillard, J.M.; Hicheur, A.; Karyotakis, Y.; Lees, J.P.; Robbe, P.; Tisserand, V.; Palano, A.; Chen, G.P.

doi:10.1103/PhysRevLett.87.162002

Measurement of $J/\psi$ production in continuum $e^+e^-$ annihilations near $\sqrt{s}=10.6$ GeV

BaBar

Collaboration

Jun, 2001

8 pages

Published in:

Phys.Rev.Lett. 87 (2001) 162002

e-Print:

hep-ex/0106044 [hep-ex]

DOI:

10.1103/PhysRevLett.87.162002

PDG:

{{\mathit \Upsilon}{(4S)}}

\rightarrow

{{\mathit J / \psi}{(1S)}}

anything

Report number:

BABAR-PUB-01-12,
SLAC-PUB-8854

Experiments:

SLAC-PEP2-BABAR

View in:

datasets

reference search92 citations

Citations per year

Abstract: (arXiv)

The production of

J/\psi

mesons in continuum

e^+e^-

annihilations has been studied with the BABAR detector at energies near the

\Upsilon(4S)

resonance, approximately 10.6 GeV. The mesons are distinguished from

J/\psi

production in B decays through their center-of-mass momentum and energy. We measure the cross section

e^+e^-\to J/\psi X

to be

2.52\pm 0.21\pm 0.21

pb: for momentum above 2 GeV/c, it is

1.87\pm 0.10\pm 0.15

pb. We set a 90% confidence level upper limit on the branching fraction for direct

\Upsilon(4S)

\to J/\psi X

decays at

4.7\times 10^{-4}$.

electron positron: colliding beams
electron positron: annihilation
J/psi(3100): electroproduction
channel cross section: momentum dependence
angular distribution
helicity
Upsilon(10570): decay
Upsilon(10570): branching ratio
upper limit
BaBar

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Figures(0)

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Measurement of J/ψJ/\psiJ/ψ production in continuum e+e−e^+e^-e+e− annihilations near s=10.6\sqrt{s}=10.6s​=10.6 GeV

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Measurement of $J/\psi$ production in continuum $e^+e^-$ annihilations near $\sqrt{s}=10.6$ GeV