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  "authors": [
    {
      "affiliations": [
        {
          "country": "Germany", 
          "value": "Theoretische Physik 1, Naturwissenschaftlich-Technische Fakult\u00e4t, Universit\u00e4t Siegen, Walter-Flex-Stra\u00dfe 3, Siegen, D-57068, Germany", 
          "organization": "Universit\u00e4t Siegen"
        }
      ], 
      "surname": "Khodjamirian", 
      "email": "khodjamirian@physik.uni-siegen.de", 
      "full_name": "Khodjamirian, Alexander", 
      "given_names": "Alexander"
    }, 
    {
      "affiliations": [
        {
          "country": "Croatia", 
          "value": "Rudjer Boskovic Institute, Division of Theoretical Physics, Bijeni\u010dka 54, Zagreb, HR-10000, Croatia", 
          "organization": "Division of Theoretical Physics"
        }
      ], 
      "surname": "Meli\u0107", 
      "email": "melic@irb.hr", 
      "full_name": "Meli\u0107, Bla\u017eenka", 
      "given_names": "Bla\u017eenka"
    }, 
    {
      "affiliations": [
        {
          "country": "China", 
          "value": "School of Physics, Nankai University, Weijin Road 94, Tianjin, 300071, China", 
          "organization": "Nankai University"
        }
      ], 
      "surname": "Wang", 
      "email": "wangyuming@nankai.edu.cn", 
      "full_name": "Wang, Yu-Ming", 
      "given_names": "Yu-Ming"
    }, 
    {
      "affiliations": [
        {
          "country": "China", 
          "value": "School of Physics, Nankai University, Weijin Road 94, Tianjin, 300071, China", 
          "organization": "Nankai University"
        }, 
        {
          "country": "Germany", 
          "value": "Physik Department T31, Technische Universit\u00e4t M\u00fcnchen, James-Franck-Stra\u00dfe 1, Garching, D-85748, Germany", 
          "organization": "Technische Universit\u00e4t M\u00fcnchen"
        }
      ], 
      "surname": "Wei", 
      "email": "weiyb@nankai.edu.cn", 
      "full_name": "Wei, Yan-Bing", 
      "given_names": "Yan-Bing"
    }
  ], 
  "titles": [
    {
      "source": "Springer", 
      "title": "The D \u2217 D\u03c0 and B \u2217 B\u03c0 couplings from light-cone sum rules"
    }
  ], 
  "dois": [
    {
      "value": "10.1007/JHEP03(2021)016"
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      "page_end": "41", 
      "journal_title": "Journal of High Energy Physics", 
      "material": "article", 
      "journal_volume": "2021", 
      "artid": "JHEP03(2021)016", 
      "year": 2021, 
      "page_start": "1", 
      "journal_issue": "3"
    }
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    "submission_number": "72abab9ebec811eb92440a580a640a05"
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  "page_nr": [
    41
  ], 
  "license": [
    {
      "url": "https://creativecommons.org/licenses//by/4.0", 
      "license": "CC-BY-4.0"
    }
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  "copyright": [
    {
      "holder": "The Author(s)", 
      "year": "2021"
    }
  ], 
  "control_number": "61303", 
  "record_creation_date": "2021-04-12T08:30:28.760720", 
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  "collections": [
    {
      "primary": "Journal of High Energy Physics"
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  "arxiv_eprints": [
    {
      "categories": [
        "hep-ph", 
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        "hep-lat"
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      "value": "2011.11275"
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  ], 
  "abstracts": [
    {
      "source": "Springer", 
      "value": "We revisit the calculation of the strong couplings D \u2217 D\u03c0 and B \u2217 B\u03c0 from the QCD light-cone sum rules using the pion light-cone distribution amplitudes. The accuracy of the correlation function, calculated from the operator product expansion near the light-cone, is upgraded by taking into account the gluon radiative corrections to the twist-3 terms. The double spectral density of the correlation function, including the twist-2, 3 terms at   <math> <mi>O</mi> <mfenced> <msub> <mi>\u03b1</mi> <mi>s</mi> </msub> </mfenced> </math>  $$ \\mathcal{O}\\left({\\alpha}_s\\right) $$  and the twist-4 LO terms, is presented in an analytical form for the first time. This form allows us to use various versions of the quark-hadron duality regions in the double dispersion relation underlying the sum rules. We predict   <math> <msub> <mi>g</mi> <mrow> <msup> <mi>D</mi> <mo>\u2217</mo> </msup> <mi>D\u03c0</mi> </mrow> </msub> <mo>=</mo> <msubsup> <mn>14.1</mn> <mrow> <mo>\u2212</mo> <mn>1.2</mn> </mrow> <mrow> <mo>+</mo> <mn>1.3</mn> </mrow> </msubsup> </math>  $$ {g}_{D^{\\ast } D\\pi}={14.1}_{-1.2}^{+1.3} $$  and   <math> <msub> <mi>g</mi> <mrow> <msup> <mi>B</mi> <mo>\u2217</mo> </msup> <mi>B\u03c0</mi> </mrow> </msub> <mo>=</mo> <msubsup> <mn>30.0</mn> <mrow> <mo>\u2212</mo> <mn>2.4</mn> </mrow> <mrow> <mo>+</mo> <mn>2.6</mn> </mrow> </msubsup> </math>  $$ {g}_{B^{\\ast } B\\pi}={30.0}_{-2.4}^{+2.6} $$  when the decay constants of heavy mesons entering the light-cone sum rule are taken from lattice QCD results. We compare our results with the experimental value for the charmed meson coupling and with the lattice QCD calculations."
    }
  ], 
  "imprints": [
    {
      "date": "2021-03-01", 
      "publisher": "Springer"
    }
  ]
}