Abstract
Using data acquired with the CLEO detector at the CESR e+e- collider at s=3.773GeV, we measure the cross section for the radiative return process e+e-→γJ/ψ, J/ψ→μ+μ-, resulting in B(J/ψ→μ+μ-)×Γee(J/ψ)=0.3384±0. 0058±0.0071keV, Γee(J/ψ)=5.68±0.11±0.13keV, and Γtot(J/ψ)=95.5±2.4±2.4keV, in which the errors are statistical and systematic, respectively. We also determine the ratio Γee[ψ(2S)]/Γee(J/ψ)=0.45±0.01±0.02.
Original language | English |
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Article number | 051103 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 73 |
Issue number | 5 |
DOIs | |
Publication status | Published - 10 Mar 2006 |
Externally published | Yes |
Bibliographical note
Copyright:Copyright 2012 Elsevier B.V., All rights reserved.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)