Toplam kayıt 20, listelenen: 1-10
Doubly heavy spin-1/2 baryon spectrum in QCD
We calculate the mass and residue of the heavy spin-1/2 baryons containing two heavy h or c quarks in the framework of QCD sum rules. We use the most general form of the interpolating current in its symmetric and anti-symmetric ...
Mass and meson-current coupling constant of the tensor D-2*(2460)
We calculate the mass and meson-current coupling constant of the D-2*(2460) tensor meson in the framework of QCD sum rules. The obtained result on the mass is compatible with the experimental data.
Semileptonic transition of Sigma(b) to Sigma in light cone QCD sum rules
(American Physical Society, 2012-01-03)
We use distribution amplitudes of the light Sigma baryon and the most general form of the interpolating current for heavy Sigma(b) baryon to investigate the semileptonic Sigma(b) -> Sigma l(+)l(-) transition in light cone ...
Light cone QCD sum rules study of the semileptonic heavy Xi(Q) and Xi(Q)' transitions to Xi and Sigma baryons
The semileptonic decays of heavy spin-1/2, Xi(b(c)) and Xi(b(c))' baryons to the light spin-1/2, Xi and S baryons are investigated in the framework of light cone QCD sum rules. In particular, using the most general form ...
Systematic analysis of the B-s -> f(0)l(+)l(-) in the universal extra dimension
Using form factors enrolled to the transition matrix elements and calculated via light-cone QCD sum rules including next-to-leading order corrections in the strong coupling constant, we provide a systematic analysis of the ...
Semileptonic transition of P-wave bottomonium chi(b0)(1P) to B-c meson
Taking into account the two-gluon condensate contributions, the transition form factors enrolled to the low-energy effective Hamiltonian describing the semileptonic chi(b0) -> B(c)l (nu) over bar, (l = (e, mu, tau)) decay ...
Double-lepton polarization asymmetries and branching ratio of the B -> gamma l(+)l(-) transition in universal extra dimension
We study the double-lepton polarization asymmetries and single and double-lepton polarization forward-backward asymmetries of the rare b ! s‘þ‘ mode within the standard model and in the Appelquist-Cheng-Dobrescu model, ...
Mixing angle of doubly heavy baryons in QCD
We calculate the mixing angles between the spin-1/2, Xi(bc)-Xi'(bc) and Omega(bc)-Omega'(bc) states of doubly heavy baryons within the QCD sum rules method. It is found that the mixing angles are large and have the values ...
Investigation of heavy-heavy pseudoscalar mesons in thermal QCD sum rules
(IOP Publishing, 2012-01)
We investigate the mass and decay constant of the heavy-heavy pseudoscalar, B(c), eta(c) and eta(b) mesons in the framework of finite-temperature QCD sum rules. The annihilation and scattering parts of spectral density are ...
Properties of bound states containing fourth family quarks
(IOP Publishing, 2012)
The heavy fourth generation of quarks that have sufficiently small mixing with the three known SM families form hadrons. In the present work, we calculate the masses and decay constants of mesons containing either both ...