{
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  "authors": [
    {
      "raw_name": "Iryna Boiarska", 
      "affiliations": [
        {
          "country": "Denmark", 
          "value": "Discovery Center, Niels Bohr Institute, Copenhagen University, Blegdamsvej 17, DK-2100 Copenhagen, Denmark"
        }
      ], 
      "surname": "Boiarska", 
      "given_names": "Iryna", 
      "full_name": "Boiarska, Iryna"
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    {
      "raw_name": "Alexey Boyarsky", 
      "affiliations": [
        {
          "country": "Netherlands", 
          "value": "Instituut-Lorentz for Theoretical Physics, Universiteit Leiden, Niels Bohrweg 2, 2333 CA Leiden, Netherlands"
        }
      ], 
      "surname": "Boyarsky", 
      "given_names": "Alexey", 
      "full_name": "Boyarsky, Alexey"
    }, 
    {
      "raw_name": "Oleksii Mikulenko", 
      "affiliations": [
        {
          "country": "Netherlands", 
          "value": "Instituut-Lorentz for Theoretical Physics, Universiteit Leiden, Niels Bohrweg 2, 2333 CA Leiden, Netherlands"
        }
      ], 
      "surname": "Mikulenko", 
      "given_names": "Oleksii", 
      "full_name": "Mikulenko, Oleksii"
    }, 
    {
      "raw_name": "Maksym Ovchynnikov", 
      "affiliations": [
        {
          "country": "Netherlands", 
          "value": "Instituut-Lorentz for Theoretical Physics, Universiteit Leiden, Niels Bohrweg 2, 2333 CA Leiden, Netherlands"
        }
      ], 
      "surname": "Ovchynnikov", 
      "given_names": "Maksym", 
      "full_name": "Ovchynnikov, Maksym"
    }
  ], 
  "titles": [
    {
      "source": "APS", 
      "title": "Constraints from the CHARM experiment on heavy neutral leptons with tau mixing"
    }
  ], 
  "dois": [
    {
      "value": "10.1103/PhysRevD.104.095019"
    }
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  "publication_info": [
    {
      "journal_volume": "104", 
      "journal_title": "Physical Review D", 
      "material": "article", 
      "journal_issue": "9", 
      "year": 2021
    }
  ], 
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    "date": "2022-04-05T09:22:04.241802", 
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    "submission_number": "a0d20d20b4c111ec837fd6d834be26e1"
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  "page_nr": [
    10
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  "license": [
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      "url": "https://creativecommons.org/licenses/by/4.0/", 
      "license": "CC-BY-4.0"
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  "copyright": [
    {
      "statement": "Published by the American Physical Society", 
      "year": "2021"
    }
  ], 
  "control_number": "66150", 
  "record_creation_date": "2021-11-23T16:30:07.040442", 
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      "primary": "HEP"
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      "primary": "Citeable"
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  "arxiv_eprints": [
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      "categories": [
        "hep-ph"
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      "value": "2107.14685"
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  ], 
  "abstracts": [
    {
      "source": "APS", 
      "value": "We reanalyze the results of the searches for Heavy Neutral Leptons (HNLs) by the CHARM experiment. We study HNL decay channel <math><mrow><mi>N</mi><mo>\u2192</mo><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>\u2212</mo></mrow></msup><mi>\u03bd</mi><mo>/</mo><msup><mrow><mi>\u03bc</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>\u03bc</mi></mrow><mrow><mo>\u2212</mo></mrow></msup><mi>\u03bd</mi></mrow></math> and show that, in addition to the constraints on the HNL\u2019s mixings with <math><msub><mi>\u03bd</mi><mi>e</mi></msub></math> or <math><msub><mi>\u03bd</mi><mi>\u03bc</mi></msub></math>, the same data also implies limits on the HNLs that mix only with <math><msub><mi>\u03bd</mi><mi>\u03c4</mi></msub></math> and have masses in the range <math><mrow><mn>290</mn><mtext> </mtext><mtext> </mtext><mi>MeV</mi><mo>&lt;</mo><msub><mrow><mi>m</mi></mrow><mrow><mi>N</mi></mrow></msub><mo>\u2272</mo><mn>1.6</mn><mtext> </mtext><mtext> </mtext><mi>GeV</mi></mrow></math>: the region in the parameter space that was considered in the literature as a target for HNLs searches."
    }
  ], 
  "imprints": [
    {
      "date": "2021-11-23", 
      "publisher": "APS"
    }
  ]
}