6 research outputs found
Properties of charmed-strange tensor meson
The mass and current coupling constant of the
charmed-strange meson is calculated in the framework of two-point QCD sum rule
approach. Although the quantum numbers of this meson is not exactly known, its
width and decay modes are consistent with , which we consider to
write the interpolating current used in our calculations. Replacing the light
strange quark with up or down quark we also compare the results with those of
charmed tensor meson and estimate the order of SU(3) flavor symmetry
violation.Comment: 9 Pages, 2 Figures and 1 Table, Some misprints are correcte
Strong coupling constants of bottom and charmed mesons with scalar, pseudoscalar and axial vector kaons
The strong coupling constants, , ,
, , and
, where , and are scalar, pseudoscalar
and axial vector kaon mesons, respectively are calculated in the framework of
three-point QCD sum rules. In particular, the correlation functions of the
considered vertices when both and mesons are off-shell
are evaluated. In the case of , which is either or
, the mixing between these two states are also taken into account. A
comparison of the obtained result with the existing prediction on
as the only coupling constant among the considered
vertices, previously calculated in the literature, is also made.Comment: 20 Pages, 3 Figures and 8 Table