Now showing items 41-50 of 89
Analysis of Ds*DK1 (Bs*BK1) coupling constants within QCD sum rules
(IOP Publishing, 2012)
We compute the strong coupling constants for D*sDK1 and B*sBK1 vertices within the QCD sum rules. The coupling constants are calculated for both D(B) and K1 off-shell mesons.
Thermal properties of light tensor mesons via QCD sum rules
(Hindawi Publishing Corporation, 2015)
The thermal properties of f(2)(1270), a(2)(1320), and K-2*(1430) light tensor mesons are investigated in the framework of QCD sum rules at finite temperature. In particular, the masses and decay constants of the light ...
Analysis of the strong D-2* (2460)(0) -> D+ pi(-) and D-s2*(2573)(+) -> D+ K-0 transitions via QCD sum rules
The strong D-2* (2460)(0) -> D+ pi(-) and D-s2* (2573)(+) -> D+ K-0 transitions are analyzed via three-point QCD sum rules. First we calculate the corresponding strong coupling constants g(D2)*D pi and g(Ds2)*DK. Then we ...
B-c Meson at Finite Temperature
In the present work, we investigate properties of B-c meson in the basis of thermal QCD sum rules. The annihilation and scattering parts of spectral density are calculated in the lowest order of perturbation theory. Taking ...
Impact of finite density on spectroscopic parameters of decuplet baryons
(American Physical Society, 2016-12)
The decuplet baryons, Δ, Σ∗, Ξ∗, and Ω-, are studied in nuclear matter by using the in-medium QCD sum rules. By fixing the three-momentum of the particles under consideration at the rest frame of the medium, the negative ...
Exploring X(5568) as a meson molecule
(Springer Verlag, 2016-10)
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→B0sπ+X→Bs0π+ , are explored using the BK¯¯¯¯¯BK¯ molecule ...
Width of the exotic Xb (5568) state through its strong decay to Bs0 π+
(American Physical Society, 2016-06)
The width of the newly observed exotic state Xb(5568) is calculated via its dominant strong decay to Bs0π+ using the QCD sum rule method on the light cone in conjunction with the soft-meson approximation. To this end, the ...
Decay constants of the charmed tensor mesons at finite temperature
(American Institute of Physics, 2016-01)
Investigation of the thermal properties of the mesons with higher spin is one of the important problems in the hadron physics. At finite temperature, the Lorentz invariance is broken by the choice of a preferred frame of ...
Application of the QCD light cone sum rule to tetraquarks: The strong vertices XbXb rho and XcXc rho
(American Physical Society, 2016-06-30)
The full version of the QCD light-cone sum rule method is applied to tetraquarks containing a single heavy b or c quark. To this end, investigations of the strong vertices XbXb rho and XcXc rho are performed, where X-b = ...
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] ...