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Strong couplings of negative and positive parity nucleons to the heavy baryons and mesons
(American Physical Society, 2015-07-20)
The strong coupling form factors related to the strong vertices of the positive and negative parity nucleons with the heavy Lambda(b[c])[Sigma b[c]] baryons and heavy B*[D*] vector mesons are calculated using a threepoint ...
Charmed partner of the exotic X(5568) state and its properties
(American Physical Society, 2016-05-06)
The mass, decay constant, and width of a hypothetical charmed partner X-c of the newly observed exotic X-b(5568) state are calculated using the technique of the QCD sum rule method. The X-c = [su][(c) over bar(d) over bar] ...
Mass and decay constant of the newly observed exotic X(5568) state
(American Physical Society, 2016-04-20)
The mass and decay constant of the X(5568) state newly observed by the D0 Collaboration are computed within the two-point sum rule method using the diquark-antidiquark interpolating current. In calculations, the vacuum ...
On the strong coupling N(*)N(*)pi
We study the strong vertices N*N pi, N*N*pi and NN pi in QCD, where N* denotes the negative-parity N(1535) state. We use the most general form of the interpolating currents to calculate the corresponding strong coupling ...