1 Ocak 2022 Dergi makalesi Açık Erişim

Agaev, S. S.; Azizi, K.; Sundu, H.

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{
  "@context": "https://schema.org/", 
  "@id": 262599, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "Institute for Physical Problems, Baku State University, Az\u20131148 Baku, Azerbaijan", 
      "name": "Agaev, S.\u2009S."
    }, 
    {
      "@type": "Person", 
      "affiliation": "Department of Physics, University of Tehran, North Karegar Avenue, Tehran 14395-547, Iran", 
      "name": "Azizi, K."
    }, 
    {
      "@type": "Person", 
      "affiliation": "Department of Physics, Kocaeli University, 41380 Izmit, Turkey", 
      "name": "Sundu, H."
    }
  ], 
  "datePublished": "2022-01-01", 
  "description": "<p>We investigate the structure $X\\left(4630\\right)$ discovered by the LHCb Collaboration in the process ${B}^{+}\\to J/\\psi \\varphi {K}^{+}$ as a resonance in the $J/\\psi \\varphi $ mass distribution. We explore this resonance as a diquark-antidiquark state $X=\\left[cs\\right]\\left[\\overline{c}\\overline{s}\\right]$ with spin-parities ${J}^{\\mathrm{PC}}={1}^{-+}$. Its mass and current coupling are calculated using the QCD two-point sum rule method by taking into account vacuum condensates up to dimension 10. We also study decays of this tetraquark to mesons $J/\\psi \\varphi $, ${\\eta }_{c}{\\eta }^{\\left(\\prime \\right)}$ and ${\\chi }_{c1}{\\eta }^{\\left(\\prime \\right)}$, and compute partial widths of these channels. To this end, we employ the light-cone sum rule approach and technical methods of soft-meson approximation to extract strong coupling at relevant tetraquark-meson-meson vertices. Our predictions for the mass $m=\\left(4632\u00b160\\right)\\text{}\\text{}\\mathrm{MeV}$ and width $\\Gamma =\\left(159\u00b131\\right)\\text{}\\text{}\\mathrm{MeV}$ of $X$ are in a very nice agreement with recent measurements of the LHCb Collaboration. These results allow us to interpret the resonance $X\\left(4630\\right)$ as the tetraquark $X$ with spin-parities ${J}^{\\mathrm{PC}}={1}^{-+}$.</p>", 
  "headline": "Resonance $X\\left(4630\\right)$", 
  "identifier": 262599, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Resonance $X\\left(4630\\right)$", 
  "url": "https://aperta.ulakbim.gov.tr/record/262599"
}