{
  "abstract": "We explore signatures of a massive right-handed neutrino (RHN) in angular distributions of $\\bar{B} \\to D^* (\\to D π) τ(\\to πν_τ) \\bar X$ decays, where $X$ is an invisible state. We assume the new physics is described by the standard model effective field theory extended with an RHN in the MeV-GeV mass range. We calculate for the first time the full differential distributions in terms of the visible final states, including the decay of the $τ$ lepton. We evaluate the sensitivity of various distributions to the new physics operators.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: JHEP 2609:092 (2026)",
  "arxiv": "2606.16166",
  "author_total": 5,
  "authors": [
    {
      "name": "Nilakshi Das"
    },
    {
      "name": "Alakabha Datta"
    },
    {
      "name": "Tejhas Kapoor"
    },
    {
      "name": "Danny Marfatia"
    },
    {
      "name": "Lopamudra Mukherjee"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/44se1fg07fg7g.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.16166",
  "fulltext_url": null,
  "id": "44se1fg07fg7g",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.16166",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.16166",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/44se1fg07fg7g.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:25Z",
      "native_id": "2606.16166",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.16166"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Massive right-handed neutrinos in $\\bar{B} \\to D^* τ\\bar X$ decay",
  "title_text": "Massive right-handed neutrinos in B̅ → D^* τX̅ decay",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:25Z",
  "url": "https://research.draconitic.com/paper/44se1fg07fg7g",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1007/jhep09(2026)092",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}