1 Ocak 2022 Dergi makalesi Açık Erişim

Agaev, S. S.; Azizi, K.; Sundu, H.

Citation Style Language JSON

{
  "DOI": "10.1103/PhysRevD.106.014025", 
  "abstract": "<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>", 
  "author": [
    {
      "family": "Agaev", 
      "given": " S.\u2009S."
    }, 
    {
      "family": "Azizi", 
      "given": " K."
    }, 
    {
      "family": "Sundu", 
      "given": " H."
    }
  ], 
  "container_title": "Physical Review D", 
  "id": "262599", 
  "issue": "1", 
  "issued": {
    "date-parts": [
      [
        2022, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Resonance $X\\left(4630\\right)$", 
  "type": "article-journal", 
  "volume": "106"
}