@article{90992ded441b459fa10570f768bec254,
title = "Measurement of the leptonic decay width of J/ψ using initial state radiation",
abstract = "Using a data set of 2.93 fb−1 taken at a center-of-mass energy of √s = 3.773 GeVwith the BESIII detector at the BEPCII collider, we measure the process e+e− → J/ψγ →μ+μ−γ and determine the product of the branching fraction and the electronic width Bμμ · Γee = (333.4 ± 2.5stat ± 4.4sys) eV. Using the earlier-published BESIII result for Bμμ = (5.973 ± 0.007stat ± 0.037sys)%, we derive the J/ψ electronic width Γee = (5.58 ±0.05stat ±0.08sys) keV.",
keywords = "BESIII, Electronic width, Initial state radiation, J/ψ resonance",
author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and Ai, {X. C.} and O. Albayrak and M. Albrecht and Ambrose, {D. J.} and A. Amoroso and An, {F. F.} and Q. An and Bai, {J. Z.} and {Baldini Ferroli}, R. and Y. Ban and {W. Bennett}, D. and Bennett, {J. V.} and M. Bertani and D. Bettoni and Bian, {J. M.} and F. Bianchi and E. Boger and I. Boyko and {A. Briere}, R. and H. Cai and X. Cai and O. Cakir and A. Calcaterra and {F. Cao}, G. and Cetin, {S. A.} and Chang, {J. F.} and G. Chelkov and G. Chen and Chen, {H. S.} and Chen, {H. Y.} and Chen, {J. C.} and Chen, {M. L.} and Chen, {S. J.} and X. Chen and Chen, {X. R.} and Chen, {Y. B.} and Cheng, {H. P.} and Chu, {X. K.} and G. Cibinetto and Dai, {H. L.} and Dai, {J. P.} and A. Dbeyssi and D. Dedovich and Deng, {Z. Y.} and A. Denig and I. Denysenko and M. Destefanis and F. Demori",
note = "Publisher Copyright: {\textcopyright} 2016 The Author(s).",
year = "2016",
doi = "10.1016/j.physletb.2016.08.011",
language = "English",
volume = "761",
pages = "98--103",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
}