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High Energy Physics - Phenomenology

arXiv:1603.02498 (hep-ph)
[Submitted on 8 Mar 2016 (v1), last revised 24 Apr 2016 (this version, v3)]

Title:Analysis of the strong decay $X(5568) \to B_s^0π^+$ with QCD sum rules

Authors:Zhi-Gang Wang
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Abstract:In this article, we take the $X(5568)$ to be the scalar diquark-antidiquark type tetraquark state, study the hadronic coupling constant $g_{XB_s\pi}$ with the three-point QCD sum rules by carrying out the operator product expansion up to the vacuum condensates of dimension-6 and including both the connected and disconnected Feynman diagrams, then calculate the partial decay width of the strong decay $ X(5568) \to B_s^0 \pi^+$ and obtain the value $\Gamma_X=\left(20.5\pm8.1\right)\,\rm{MeV}$, which is consistent with the experimental data $\Gamma_X = \left(21.9 \pm 6.4 {}^{+5.0}_{-2.5}\right)\,\rm{MeV}$ from the D0 collaboration.
Comments: 10 pages, 13 figures
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1603.02498 [hep-ph]
  (or arXiv:1603.02498v3 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1603.02498
Journal reference: Eur. Phys. J. C76 (2016) 279
Related DOI: https://doi.org/10.1140/epjc/s10052-016-4133-6

Submission history

From: Zhi-Gang Wang [view email]
[v1] Tue, 8 Mar 2016 12:31:39 UTC (127 KB)
[v2] Sun, 3 Apr 2016 01:53:49 UTC (129 KB)
[v3] Sun, 24 Apr 2016 02:28:45 UTC (129 KB)
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