Exploring X(5568) as a meson molecule

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AGAEV S. S. , Azizi K., Sundu H.

EUROPEAN PHYSICAL JOURNAL PLUS, cilt.131, 2016 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 131 Konu: 10
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1140/epjp/i2016-16351-8


The parameters, i.e. the mass and current coupling of the exotic X(5568) state observed by the D0 Collaboration as well as the decay width of the process X. -> B-s(0)pi(+), are explored using the B (K) over bar molecule assumption on its structure. Employed computational methods include QCD two-point and light-cone sum rules, the latter being considered in the soft-meson approximation. The obtained results are compared with the data of the D0 Collaboration as well as with the predictions of the diquark-antidiquark model. This comparison strengthens a diquark-antidiquark picture for the X(5568) state rather than a meson molecule structure.