Semileptonic Bq→Dq∗lνB_{q}\to D^{\ast}_{q}l\nu (q=s,d,u)(q=s, d, u) transitions in QCD

The form factors relevant to $B_{q}\to D^{\ast}_{q}(J^{P}=1^{-})\ell\nu$ $(q=s, d, u)$ decays are calculated in the framework of the three point QCD sum rules approach. The heavy quark effective theory prediction of the form factors are obtained. The total decay width and branching ratio for these decays are also evaluated using the $q^2$ dependencies of these form factors.Comment: 4 pages, 4 figures and 3 tables. To be published in the proceedings of the 14th International QCD Conference (QCD 08), Montpellier, France, 7-12 July 200

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

Analysis of rare (B -> K_0*(1430) l^+ l^- decay) within QCD sum rules

Form factors of rare (B -> K_0*(1430) l^+ l^-$decay) decay are calculated within three-point QCD sum rules, with (K_0* (1430)) being the p-wave scalar meson. The branching ratios are estimated when only short, as well as short and long distance effects, are taken into account.It is obtained that the (B -> K_0*(1430) l^+ l^- (l=e,mu)) decay is measurable at LHC. Measurement of these branching ratios for the semileptonic rare (B -> K_0*(1430) l^+ l^-$ decay) can give valuable information about the nature of scalar meson (K_0* (1430)).Comment: 13 pages, 1 figur

Magnetic moments of ΞQ′\Xi_Q^\prime-ΞQ\Xi_Q transitions in light cone QCD

The $\Xi_Q^\prime$-$\Xi_Q$ transition magnetic moments are calculated in framework of the light cone QCD sum rules method (LCSR). The values of the transition magnetic moments obtained are compared with the predictions of the other theoretical approaches.Comment: 11 pages, 4 figures, LaTeX formatte

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

Vertices of the heavy spin-3/2 sextet baryons with light vector mesons in QCD

All transitions among the heavy spin--3/2 sextet baryons with participation of the light vector mesons $(B_Q^* B_Q V)$ are investigated in the framework of the light cone sum rules. These vertices are described by four coupling constants. The corresponding sum rules are derived for each coupling constant. It is shown that the correlation functions of different transitions can be described by only one invariant function.Comment: 12 Pages, 4 Figures and 3 Table

Properties of triply heavy spin--3/2 baryons

The masses and residues of the triply heavy spin--3/2 baryons are calculated in framework of the QCD sum rule approach. The obtained results are compared with the existing theoretical predictions in the literature.Comment: 13 Pages, 2 Figures and 4 Tables, To be appear in Journal of Physics G: Nuclear and Particle Physic

Double-Lepton Polarization Asymmetries and Polarized Forward Backward Asymmetries in the Rare b \to s \ell^+ \ell^- Decays in a Single Universal Extra Dimension Scenario

We study the double-lepton polarization asymmetries and single and double-lepton polarization forward backward asymmetries of the rare b \to s \ell^+ \ell^- mode within the Standard Model and in the Appelquist-Cheng-Dobrescu model, which is a new physics scenario with a single universal extra dimension. In particular, we examine the sensitivity of the observables to the radius R of the compactified extra-dimension, which is the new parameter in this new physics model.Comment: 20 Pages, 15 Figures and 1 Tabl