{
  "_oai": {
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  "authors": [
    {
      "raw_name": "M. Padmanath", 
      "affiliations": [
        {
          "country": "India", 
          "value": "The Institute of Mathematical Sciences, a CI of Homi Bhabha National Institute, Chennai, 600113, India"
        }
      ], 
      "surname": "Padmanath", 
      "given_names": "M.", 
      "full_name": "Padmanath, M."
    }, 
    {
      "raw_name": "Archana Radhakrishnan", 
      "affiliations": [
        {
          "country": "India", 
          "value": "Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India"
        }
      ], 
      "surname": "Radhakrishnan", 
      "given_names": "Archana", 
      "full_name": "Radhakrishnan, Archana"
    }, 
    {
      "raw_name": "Nilmani Mathur", 
      "affiliations": [
        {
          "country": "India", 
          "value": "Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India"
        }
      ], 
      "surname": "Mathur", 
      "given_names": "Nilmani", 
      "full_name": "Mathur, Nilmani"
    }
  ], 
  "titles": [
    {
      "source": "APS", 
      "title": "Bound Isoscalar Axial-Vector <math><mi>b</mi><mi>c</mi><mover><mi>u</mi><mo>\u00af</mo></mover><mover><mi>d</mi><mo>\u00af</mo></mover></math> Tetraquark <math><msub><mi>T</mi><mrow><mi>b</mi><mi>c</mi></mrow></msub></math> from Lattice QCD Using Two-Meson and Diquark-Antidiquark Variational Basis"
    }
  ], 
  "dois": [
    {
      "value": "10.1103/PhysRevLett.132.201902"
    }
  ], 
  "publication_info": [
    {
      "journal_volume": "132", 
      "journal_title": "Physical Review Letters", 
      "material": "article", 
      "journal_issue": "20", 
      "year": 2024
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
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    "date": "2024-05-14T20:30:04.446010", 
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    "method": "APS", 
    "submission_number": "bc71e144123011efaee6f6c28218b10c"
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  "page_nr": [
    9
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  "license": [
    {
      "url": "https://creativecommons.org/licenses/by/4.0/", 
      "license": "CC-BY-4.0"
    }
  ], 
  "copyright": [
    {
      "statement": "Published by the American Physical Society", 
      "year": "2024"
    }
  ], 
  "control_number": "85454", 
  "record_creation_date": "2024-05-14T20:30:04.446024", 
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  "collections": [
    {
      "primary": "HEP"
    }, 
    {
      "primary": "Citeable"
    }, 
    {
      "primary": "Published"
    }
  ], 
  "arxiv_eprints": [
    {
      "categories": [
        "hep-lat", 
        "hep-ex", 
        "hep-ph"
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      "value": "2307.14128"
    }
  ], 
  "abstracts": [
    {
      "source": "APS", 
      "value": "We report a lattice QCD study of the heavy-light meson-meson interactions with an explicitly exotic flavor content <math><mi>b</mi><mi>c</mi><mover><mi>u</mi><mo>\u00af</mo></mover><mover><mi>d</mi><mo>\u00af</mo></mover></math>, isospin <math><mi>I</mi><mo>=</mo><mn>0</mn></math>, and axial-vector <math><msup><mi>J</mi><mi>P</mi></msup><mo>=</mo><msup><mn>1</mn><mo>+</mo></msup></math> quantum numbers in search of possible tetraquark bound states. The calculation is performed at four values of lattice spacing, ranging from <math><mo>\u223c</mo><mn>0.058</mn></math> to <math><mo>\u223c</mo><mn>0.12</mn><mtext> </mtext><mtext> </mtext><mi>fm</mi></math>, and at five different values of valence light quark mass <math><msub><mi>m</mi><mrow><mi>u</mi><mo>/</mo><mi>d</mi></mrow></msub></math>, corresponding to pseudoscalar meson mass <math><mrow><msub><mrow><mi>M</mi></mrow><mrow><mi>ps</mi></mrow></msub></mrow></math> of about 0.5, 0.6, 0.7, 1.0, and 3.0 GeV. The energy eigenvalues in the finite volume are determined through a variational procedure applied to correlation matrices built out of two-meson interpolating operators as well as diquark-antidiquark operators. The continuum limit estimates for <math><mi>D</mi><msup><mover><mi>B</mi><mo>\u00af</mo></mover><mo>*</mo></msup></math> elastic <math><mi>S</mi></math>-wave scattering amplitude are extracted from the lowest finite-volume eigenenergies, corresponding to the ground states, using amplitude parametrizations supplemented by a lattice spacing dependence. Light quark mass <math><msub><mi>m</mi><mrow><mi>u</mi><mo>/</mo><mi>d</mi></mrow></msub></math> dependence of the <math><mi>D</mi><msup><mover><mi>B</mi><mo>\u00af</mo></mover><mo>*</mo></msup></math> scattering length (<math><msub><mi>a</mi><mn>0</mn></msub></math>) suggests that at the physical pion mass <math><msubsup><mi>a</mi><mn>0</mn><mrow><mi>phys</mi></mrow></msubsup><mo>=</mo><mo>+</mo><mn>0.57</mn><msubsup><mo>(</mo><mrow><mo>\u2212</mo><mn>5</mn></mrow><mrow><mo>+</mo><mn>4</mn></mrow></msubsup><mo>)</mo><mo>(</mo><mn>17</mn><mo>)</mo><mtext> </mtext><mtext> </mtext><mi>fm</mi></math>, which clearly points to an attractive interaction between the <math><mi>D</mi></math> and <math><msup><mover><mi>B</mi><mo>\u00af</mo></mover><mo>*</mo></msup></math> mesons that is strong enough to host a real bound state <math><msub><mi>T</mi><mrow><mi>b</mi><mi>c</mi></mrow></msub></math>, with a binding energy of <math><mrow><mo>\u2212</mo><mn>43</mn><msubsup><mrow><mo>(</mo></mrow><mrow><mo>\u2212</mo><mn>7</mn></mrow><mrow><mo>+</mo><mn>6</mn></mrow></msubsup><mo>)</mo><msubsup><mrow><mo>(</mo></mrow><mrow><mo>\u2212</mo><mn>24</mn></mrow><mrow><mo>+</mo><mn>14</mn></mrow></msubsup><mo>)</mo><mtext> </mtext><mtext> </mtext><mi>MeV</mi></mrow></math> with respect to the <math><mi>D</mi><msup><mover><mi>B</mi><mo>\u00af</mo></mover><mo>*</mo></msup></math> threshold. We also find that the strength of the binding decreases with increasing <math><msub><mi>m</mi><mrow><mi>u</mi><mo>/</mo><mi>d</mi></mrow></msub></math> and the system becomes unbound at a critical light quark mass <math><msubsup><mi>m</mi><mrow><mi>u</mi><mo>/</mo><mi>d</mi></mrow><mo>*</mo></msubsup></math> corresponding to <math><msubsup><mi>M</mi><mrow><mi>ps</mi></mrow><mo>*</mo></msubsup><mo>=</mo><mn>2.73</mn><mo>(</mo><mn>21</mn><mo>)</mo><mo>(</mo><mn>19</mn><mo>)</mo><mtext> </mtext><mtext> </mtext><mi>GeV</mi></math>."
    }
  ], 
  "imprints": [
    {
      "date": "2024-05-14", 
      "publisher": "APS"
    }
  ]
}