{
  "annotation_id": "afa7a52f-24cd-4cf6-a6e7-6884d997458e",
  "date_created": "2026-02-17T05:53:20.514000Z",
  "date_modified": "2026-02-17T05:53:20.514000Z",
  "file_hash": "988ecf7f61175570451fb8845d1e450f8a07306b268a094697a029e4106fc9e7",
  "private": false,
  "record": {
    "abstract": "Charged lepton flavor violation (CLFV) is forbidden in the Standard Model but predicted by many new physics models. We present searches for CLFV in charmonium decays using world-leading datasets collected by the BESIII detector. The processes $J/\\psi\\to e\\tau$, $J/\\psi\\to e\\mu$, and $\\psi(3686)\\to e\\mu$ are investigated using world-leading $J/\\psi$ and $\\psi(3686)$ dataset collected by BESIII. No significant signals are observed, and upper limits on branching fractions are set at $\\mathcal{B}(J/\\psi\\to e\\tau)\u003c7.5\\times10^{-8}$, $\\mathcal{B}(J/\\psi\\to e\\mu)\u003c4.5\\times10^{-9}$, and $\\mathcal{B}(\\psi(3686)\\to e\\mu)\u003c1.4\\times10^{-8}$ at 90\\% confidence level. These results provide constraints on Wilson coefficients in effective field theory and probe new physics at high energy scales.",
    "arxiv_id": "2601.09249",
    "authors": [
      "MingKuan Yuan",
      "TianZi Song",
      "ZhengYun You"
    ],
    "categories": [
      "hep-ex"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Search for Charged Lepton Flavor Violation at BESIII",
    "url": "https://arxiv.org/abs/2601.09249",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "12b838d8-38d5-448e-bfff-502ae0571ff6",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}