Vector meson–baryon strong coupling contants in light cone QCD sum rules
نویسنده
چکیده
Using the most general form of the interpolating current of the baryons, the strong coupling constants of the light vector mesons with the octet baryons are calculated within the light cone QCD sum rules. The SU(3)f symmetry breaking effects are taken into account in the calculations. It is shown that each of the electric and magnetic coupling constants can be described in terms of three universal functions. A detailed comparison of the results of this work on aforementioned couplings with the existing theoretical results is presented. PACS number(s): 11.55.Hx, 13.40.Em, 14.20.Jn e-mail: [email protected] permanent address:Institute of Physics,Baku,Azerbaijan e-mail: [email protected] e-mail: [email protected] e-mail: [email protected]
منابع مشابه
Analysis of the vertices ρNN , ρ ΣΣ and ρ ΞΞ with light - cone QCD sum rules
In this article, we calculate the strong coupling constants of the ρNN , ρΣΣ and ρΞΞ in the framework of the light-cone QCD sum rules approach. The strong coupling constants of the meson-baryon-baryon are the fundamental parameters in the one-boson exchange model which describes the baryonbaryon interactions successfully. The numerical values are in agreement with the existing calculations in p...
متن کاملJa n 20 07 Analysis of the vertices ρNN , ρ ΣΣ and ρ ΞΞ with light - cone QCD sum rules
In this article, we calculate the strong coupling constants of the ρNN , ρΣΣ and ρΞΞ in the framework of the light-cone QCD sum rules approach. The strong coupling constants of the meson-baryon-baryon are the fundamental parameters in the one-boson exchange model which describes the baryonbaryon interactions successfully. The numerical values are in agreement with the existing estimations in pa...
متن کاملAnalysis of heavy spin-3=2 baryon-heavy spin-1=2 baryon-light vector meson vertices in QCD
The heavy spin-3=2 baryon-heavy spin-1=2 baryon vertices with light vector mesons are studied within the light cone QCD sum rules method. These vertices are parametrized in terms of three coupling constants. These couplings are calculated for all possible transitions. It is shown that correlation functions for these transitions are described by only one invariant function for every Lorenz struc...
متن کاملScalar form factor of the nucleon and nucleon–scalar meson coupling constant in QCD
Scalar form factor of the nucleon is calculated in the framework of light cone QCD sum rules, using the most general form of the baryon current. Using the result on scalar form factor of the nucleon, the nucleon–scalar σ and a0 meson coupling constants are estimated. Our results on these couplings are in good agreement with the prediction of the external field QCD sum rules method. PACS number(...
متن کاملPseudoscalar–meson decuplet–baryon coupling constants in light cone QCD
Taking into account the SU(3)f breaking effects, the strong coupling constants of the π, K and η mesons with decuplet baryons are calculated within light cone QCD sum rules method. It is shown that all coupling constants, even in the case of SU(3)f breaking, are described in terms of only one universal function. It is shown that for Ξ∗0 → Ξ∗0η transition violation of SU(3)f symmetry is very lar...
متن کامل