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

B Aubert; Paul Bright-Thomas; Theresa Harrison; Christopher Hawkes; Andrew Kirk; David Knowles; Stephen O'Neale; Richard Penny; Alan Watson; Nigel Watson

doi:10.1103/PhysRevLett.87.162002

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

B Aubert, Paul Bright-Thomas, Theresa Harrison, Christopher Hawkes, Andrew Kirk, David Knowles, Stephen O'Neale, Richard Penny, Alan Watson, Nigel Watson

Physics and Astronomy

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Abstract

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. 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(-)-->J/psi X to be 2.52+/-0.21+/-0.21 pb. We set a 90% C.L. upper limit on the branching fraction for direct Upsilon(4S)-->J/psi X decays at 4.7 x 10(-4).

Original language	English
Pages (from-to)	162002
Number of pages	1
Journal	Physical Review Letters
Volume	87
Issue number	16
Early online date	1 Sept 2001
DOIs	https://doi.org/10.1103/PhysRevLett.87.162002
Publication status	Published - 1 Oct 2001

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

abstract = "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. 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(-)-->J/psi X to be 2.52+/-0.21+/-0.21 pb. We set a 90% C.L. upper limit on the branching fraction for direct Upsilon(4S)-->J/psi X decays at 4.7 x 10(-4).",

author = "B Aubert and Paul Bright-Thomas and Theresa Harrison and Christopher Hawkes and Andrew Kirk and David Knowles and Stephen O'Neale and Richard Penny and Alan Watson and Nigel Watson",

year = "2001",

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doi = "10.1103/PhysRevLett.87.162002",

language = "English",

volume = "87",

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T1 - Measurement of J/ψ production in continuum e⁺e⁺ annihilations near √s = 10.6 GeV

AU - Aubert, B

AU - Bright-Thomas, Paul

AU - Harrison, Theresa

AU - Hawkes, Christopher

AU - Kirk, Andrew

AU - Knowles, David

AU - O'Neale, Stephen

AU - Penny, Richard

AU - Watson, Alan

AU - Watson, Nigel

PY - 2001/10/1

Y1 - 2001/10/1

N2 - 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. 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(-)-->J/psi X to be 2.52+/-0.21+/-0.21 pb. We set a 90% C.L. upper limit on the branching fraction for direct Upsilon(4S)-->J/psi X decays at 4.7 x 10(-4).

AB - 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. 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(-)-->J/psi X to be 2.52+/-0.21+/-0.21 pb. We set a 90% C.L. upper limit on the branching fraction for direct Upsilon(4S)-->J/psi X decays at 4.7 x 10(-4).

U2 - 10.1103/PhysRevLett.87.162002

DO - 10.1103/PhysRevLett.87.162002

M3 - Article

C2 - 11690201

SN - 1079-7114

VL - 87

SP - 162002

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

ER -

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

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