@misc{indiciaef2a516bd45f4,
  title = {Observation of J / ψ decays to e + e − e + e − and e + e − μ + μ −},
  author = {Ablikim, M. and Achasov, M. N. and Adlarson, P. and Ahmed, S. and Albrecht, M. and Aliberti, R. and Amoroso, A. and An, M. R. and An, Q. and Bai, X. H. and Bai, Y. and Bakina, O. and Ferroli, R. Baldini and Balossino, I. and Ban, Y. and Begzsuren, K. and Berger, N. and Bertani, M. and Bettoni, D. and Bianchi, F. and Bloms, J. and Bortone, A. and Boyko, I. and Briere, R. A. and Cai, H. and Cai, X. and Calcaterra, A. and Cao, G. F. and Cao, N. and Cetin, S. A. and Chang, J. F. and Chang, W. L. and Chelkov, G. and Chen, D. Y. and Chen, G. and Chen, H. S. and Chen, M. L. and Chen, S. J. and Chen, X. R. and Chen, Y. B. and Chen, Z. J. and Cheng, W. S. and Cibinetto, G. and Cossio, F. and Cui, X. F. and Dai, H. L. and Dai, J. P. and Dai, X. C. and Dbeyssi, A. and de Boer, R. E. and Dedovich, D. and Deng, Z. Y. and Denig, A. and Denysenko, I. and Destefanis, M. and De Mori, F. and Ding, Y. and Dong, C. and Dong, J. and Dong, L. Y. and Dong, M. Y. and Dong, X. and Du, S. X. and Fan, Y. L. and Fang, J. and Fang, S. S. and Fang, Y. and Farinelli, R. and Fava, L. and Feldbauer, F. and Felici, G. and Feng, C. Q. and Feng, J. H. and Fritsch, M. and Fu, C. D. and Gao, Y. and Gao, Y. G. and Garzia, I. and Ge, P. T. and Geng, C. and Gersabeck, E. M. and Goetzen, K. and Gong, L. and Gong, W. X. and Gradl, W. and Greco, M. and Gu, L. M. and Gu, M. H. and Gu, S. and Gu, Y. T. and Guan, C. Y. and Guo, A. Q. and Guo, L. B. and Guo, R. P. and Guo, Y. P. and Guskov, A. and Han, T. T. and Han, W. Y. and Hao, X. Q. and Harris, F. A.},
  year = {2024},
  doi = {10.1103/physrevd.109.052006},
  url = {https://www.osti.gov/biblio/2324691},
  note = {Source identifier: 2324691}
}