{
  "abstract": "Attosecond streaking is inherently multiphoton, yet we uncover a hidden perturbative structure revealing the underlying continuum--continuum angular-momentum propensity. By filtering the inversion-odd response in helium streaking data at the IR fundamental, we isolate an angular distribution dominated by the $P_1$ and $P_3$ Legendre components, whose complex coefficients yield an effective $s/d$ two-photon amplitude ratio. Multichannel, two-electron time-dependent Schrödinger equation calculations demonstrate that the characteristic Fano propensity survives electron correlation. Incorporating the experimental XUV attochirp reproduces the measured emission-edge trend, while near-threshold calculations predict resonant amplitude and phase signatures associated with the bound He $np$ Rydberg series. This symmetry- and frequency-filtering approach offers a general spectroscopic framework with potential applications to atomic, molecular, and solid-state systems where attosecond streaking is established.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.24891",
  "author_total": 7,
  "authors": [
    {
      "name": "Jingsong Gao"
    },
    {
      "name": "Mahmudul Hasan"
    },
    {
      "name": "Zach Eisenhutt"
    },
    {
      "name": "Vladislav Serov"
    },
    {
      "name": "Hao Liang"
    },
    {
      "name": "Meng Han"
    },
    {
      "name": "Anatoli Kheifets"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5y06p2vmyyga5.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.24891",
  "fulltext_url": null,
  "id": "5y06p2vmyyga5",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.24891",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.atom-ph"
    ],
    [
      "openalex",
      "3107|Laser-Matter Interactions and Applications"
    ]
  ],
  "openalex": "W7223003440",
  "pdf_url": "https://arxiv.org/pdf/2610.24891",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5y06p2vmyyga5.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:15Z",
      "native_id": "2610.24891",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.24891"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.atom-ph",
      "subfield": "amo"
    }
  ],
  "title": "Hidden Perturbative Structure in Attosecond Streaking",
  "title_text": "Hidden Perturbative Structure in Attosecond Streaking",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:15Z",
  "url": "https://research.draconitic.com/paper/5y06p2vmyyga5",
  "venue": "arXiv",
  "versions": []
}