5,712 research outputs found
Heavy baryon--light vector meson couplings in QCD
The strong coupling constants of heavy baryons with light vector mesons are
calculated in the framework of the light cone QCD sum rules using the most
general form of the interpolating currents for the heavy baryons. It is shown
that the sextet--sextet, sextet--antitriplet and antitriplet--antitriplet
transitions are described by one invariant function for each class of
transitions. The values of the electric and magnetic coupling constants for
these transitions are obtained.Comment: 16 Pages, 4 Figures and 7 Table
Strong coupling constants of heavy spin--3/2 baryons with light pseudoscalar mesons
The strong coupling constants among members of the heavy spin--3/2 baryons
containing single heavy quark with light pseudoscalar mesons are calculated in
the framework of the light cone QCD sum rules. Using symmetry arguments, the
structure independent relations among different correlation functions are
obtained. It is shown that all possible transitions can be described in terms
of one universal invariant function whose explicit expression is Lorenz
structure dependent.Comment: 16 Pages, 1 figure and 1 Tabl
Heavy tensor mesons in QCD
The masses and decay constants of the ground state heavy
tensor mesons are calculated in the framework of the QCD sum rules approach.
The obtained results on the masses are in good consistency with the
experimental values. Our predictions on the decay constants can be verified in
the future experiments.Comment: 7 Pages and one Tabl
The masses and residues of doubly heavy spin--3/2 baryons
The masses and residues of the spin--3/2 doubly heavy baryons are calculated
within the QCD sum rules method. A comparison of our predictions with those
existing in the literature is also made.Comment: 11 Pages and 4 Table
Strong transitions of decuplet to octet baryons and pseudoscalar mesons
The strong coupling constants of light pseudoscalar , and
mesons with decuplet--octet baryons are studied within light cone QCD sum
rules, where symmetry breaking effects are taken into account. It is
obtained that all coupling constants under the consideration are described by
only one universal function even if symmetry breaking effects are
switched into the game.Comment: 21 Pages, 2 Figures and 3 Table
Analysis of rare (B -> K_0*(1430) l^+ l^- decay) within QCD sum rules
Form factors of rare (B -> K_0*(1430) l^+ l^- decay) can
give valuable information about the nature of scalar meson (K_0* (1430)).Comment: 13 pages, 1 figur
Masses and Residues of the Triply Heavy Spin-1/2 Baryons
We calculate the masses and residues of the triply heavy spin--1/2 baryons
using the most general form of their interpolating currents within the QCD sum
rules method. We compare the obtained results with the existing theoretical
predictions in the literature.Comment: 9 Pages and 3 Table
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