Eur. Phys. J. Plus (2016) 131: 351
https://doi.org/10.1140/epjp/i2016-16351-8

Regular Article

Exploring X(5568) as a meson molecule

¹ Department of Physics, Kocaeli University, 41380, Izmit, Turkey
² Institute for Physical Problems, Baku State University, Az-1148, Baku, Azerbaijan
³ Department of Physics, Doguş University, Acibadem-Kadiköy, 34722, Istanbul, Turkey

^* e-mail: kazizi@dogus.edu.tr

Received: 19 April 2016
Accepted: 16 September 2016
Published online: 4 October 2016

Abstract

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 , are explored using the 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.