{
  "annotation_id": "d90d2eed-36e3-4c9b-a1df-6a90c4a5448a",
  "date_created": "2026-02-17T05:53:15.229000Z",
  "date_modified": "2026-02-17T05:53:15.229000Z",
  "file_hash": "40971f04c47d354de14d00acfd7013ab7f685bca370a95074cbd48cdd3371ef7",
  "private": false,
  "record": {
    "abstract": "In this Letter, we propose a strategy to extract information on the hierarchical amplitude pair in singly Cabibbo-suppressed (SCS) charmed baryon two-body decays, with a dominant amplitude proportional to $\\lambda_s = V_{cs}^* V_{us}$ from tree operators and sub-leading one proportional to $\\lambda_b = V_{cb}^* V_{ub}$ from both penguin and tree contributions. The coexistence of these two amplitudes is essential for generating nonzero CP violation (CPV) effects. Since the $\\lambda_b$ amplitude is strongly suppressed, its experimental determination is highly challenging. However, by exploiting SU(3) flavor symmetry, which relates the well-measured Cabibbo-favored (CF) amplitudes to the SCS tree amplitudes, information on the $\\lambda_b$ amplitude can be extracted. Using current experimental data, a conservative analysis yields $\\lambda_b$ amplitudes can be as large as about $10\\%$ of the corresponding tree amplitudes with a significance of $2.1\\sigma$. In addition, the Lee-Yang parameters of these decays provide an independent probe of this elusive term. We further identify two golden decay channels, $\\Xi_c^0 \\to p K^-$ and $\\Xi_c^0 \\to \\Sigma^+ \\pi^-$, which are particularly well suited for experimental studies of CPV.",
    "arxiv_id": "2601.08502",
    "authors": [
      "Zhi-Peng Xing",
      "Jin Sun",
      "Xiao-Gang He"
    ],
    "categories": [
      "hep-ph",
      "hep-ex"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Decoding the Amplitude Pair with Distinct CPV Phases in Charmed Baryon Decays",
    "url": "https://arxiv.org/abs/2601.08502",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5457b7a4-d1fb-4b90-9dea-ed25ee9eedfd",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}