Zc(3900) as a tetraquark state: decay width in QCD sum rules
نویسندگان
چکیده
Supposing the Z c (3900) as a charged partner of the X(3872), we use the QCD sum rules techinques in order to obtain the coupling constants of the Z c J/ψ π , Z c ηc ρ + and Z c D D ∗ vertices and the corresponding decay width of these channels. We considered that the Zc(3900) can be described by a tetraquark current with the J = 1 quantum numbers. As a result, we obtained a decay width value in good agreement with the experimental values reported by BESIII and Belle collaborations.
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