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  "authors": [
    {
      "raw_name": "Anthony Francis", 
      "affiliations": [
        {
          "country": "CERN", 
          "value": "Theoretical Physics Department, CERN, CH-1211 Geneva 23, Switzerland"
        }
      ], 
      "surname": "Francis", 
      "given_names": "Anthony", 
      "full_name": "Francis, Anthony"
    }, 
    {
      "raw_name": "Renwick J. Hudspith", 
      "affiliations": [
        {
          "country": "Canada", 
          "value": "Department of Physics and Astronomy, York University, Toronto, Ontario M3J 1P3, Canada"
        }
      ], 
      "surname": "Hudspith", 
      "given_names": "Renwick J.", 
      "full_name": "Hudspith, Renwick J."
    }, 
    {
      "raw_name": "Randy Lewis", 
      "affiliations": [
        {
          "country": "Canada", 
          "value": "Department of Physics and Astronomy, York University, Toronto, Ontario M3J 1P3, Canada"
        }
      ], 
      "surname": "Lewis", 
      "given_names": "Randy", 
      "full_name": "Lewis, Randy"
    }, 
    {
      "raw_name": "Kim Maltman", 
      "affiliations": [
        {
          "country": "Canada", 
          "value": "Department of Physics and Astronomy, York University, Toronto, Ontario M3J 1P3, Canada"
        }
      ], 
      "surname": "Maltman", 
      "given_names": "Kim", 
      "full_name": "Maltman, Kim"
    }
  ], 
  "titles": [
    {
      "source": "APS", 
      "title": "Evidence for charm-bottom tetraquarks and the mass dependence of heavy-light tetraquark states from lattice QCD"
    }
  ], 
  "dois": [
    {
      "value": "10.1103/PhysRevD.99.054505"
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  "publication_info": [
    {
      "journal_volume": "99", 
      "journal_title": "Physical Review D", 
      "material": "article", 
      "journal_issue": "5", 
      "year": 2019
    }
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  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
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    "date": "2020-06-29T15:38:14.280754", 
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    "method": "APS", 
    "submission_number": "bca49440b8c511eaad8602163e01809a"
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  "page_nr": [
    16
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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": "2019"
    }
  ], 
  "control_number": "46260", 
  "record_creation_date": "2019-03-21T13:30:17.237660", 
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      "primary": "HEP"
    }, 
    {
      "primary": "Citeable"
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    {
      "primary": "Published"
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  ], 
  "arxiv_eprints": [
    {
      "categories": [
        "hep-lat", 
        "hep-ph", 
        "nucl-th"
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      "value": "1810.10550"
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  ], 
  "abstracts": [
    {
      "source": "APS", 
      "value": "We continue our study of heavy-light four-quark states and find evidence from lattice QCD for the existence of a strong-interaction-stable <math><mi>I</mi><mo>(</mo><msup><mi>J</mi><mi>P</mi></msup><mo>)</mo><mo>=</mo><mn>0</mn><mo>(</mo><msup><mn>1</mn><mo>+</mo></msup><mo>)</mo></math> <math><mi>u</mi><mi>d</mi><mover><mi>c</mi><mo>\u00af</mo></mover><mover><mi>b</mi><mo>\u00af</mo></mover></math> tetraquark with mass in the range of 15 to 61 MeV below <math><mrow><mover><mrow><mi>D</mi></mrow><mrow><mo>\u00af</mo></mrow></mover><msup><mrow><mi>B</mi></mrow><mrow><mo>*</mo></mrow></msup></mrow></math> threshold. Since this range includes the electromagnetic <math><mrow><mover><mrow><mi>D</mi></mrow><mrow><mo>\u00af</mo></mrow></mover><mi>B</mi><mi>\u03b3</mi></mrow></math> decay threshold, current uncertainties do not allow us to determine whether such a state would decay electromagnetically or only weakly. We also perform a study at fixed pion mass, with non-relativistic QCD (NRQCD) for the heavy quarks, simulating <math><mi>q</mi><msup><mi>q</mi><mo>\u2032</mo></msup><msup><mover><mi>b</mi><mo>\u00af</mo></mover><mo>\u2032</mo></msup><mover><mi>b</mi><mo>\u00af</mo></mover></math> and <math><mi>q</mi><msup><mi>q</mi><mo>\u2032</mo></msup><msup><mover><mi>b</mi><mo>\u00af</mo></mover><mo>\u2032</mo></msup><msup><mover><mi>b</mi><mo>\u00af</mo></mover><mo>\u2032</mo></msup></math> tetraquarks with <math><mrow><mi>q</mi></mrow></math>, <math><mrow><msup><mrow><mi>q</mi></mrow><mrow><mo>\u2032</mo></mrow></msup><mo>=</mo><mi>u</mi><mi>d</mi></mrow></math> or <math><mrow><mo>\u2113</mo><mi>s</mi></mrow></math> and variable, unphysical <math><msub><mi>m</mi><msup><mi>b</mi><mo>\u2032</mo></msup></msub></math> in order to investigate the heavy mass dependence of such tetraquark states. We find that the dependence of the binding energy follows a phenomenologically expected form and that, though NRQCD breaks down before <math><msub><mi>m</mi><msup><mi>b</mi><mo>\u2032</mo></msup></msub><mo>=</mo><msub><mi>m</mi><mi>c</mi></msub></math> is reached, the results at higher <math><msub><mi>m</mi><msup><mi>b</mi><mo>\u2032</mo></msup></msub></math> clearly identify the <math><mi>u</mi><mi>d</mi><msup><mover><mi>b</mi><mo>\u00af</mo></mover><mo>\u2032</mo></msup><mover><mi>b</mi><mo>\u00af</mo></mover></math> channel as the most likely to support a strong-interaction-stable tetraquark state at <math><msub><mi>m</mi><msup><mi>b</mi><mo>\u2032</mo></msup></msub><mo>=</mo><msub><mi>m</mi><mi>c</mi></msub></math>. This observation serves to motivate the direct <math><mrow><mi>u</mi><mi>d</mi><mover><mrow><mi>c</mi></mrow><mrow><mo>\u00af</mo></mrow></mover><mover><mrow><mi>b</mi></mrow><mrow><mo>\u00af</mo></mrow></mover></mrow></math> simulation. Throughout we use dynamical <math><msub><mi>n</mi><mi>f</mi></msub><mo>=</mo><mn>2</mn><mo>+</mo><mn>1</mn></math> ensembles with pion masses <math><msub><mi>m</mi><mi>\u03c0</mi></msub><mo>=</mo><mn>415</mn></math>, 299, and 164 MeV reaching down almost to the physical point, a relativistic heavy quark prescription for the charm quark and NRQCD for the bottom quark(s)."
    }
  ], 
  "imprints": [
    {
      "date": "2019-03-21", 
      "publisher": "APS"
    }
  ]
}