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The transition magnetic dipole and electric quadrupole moments of the radiative decays of the sextet heavy flavored spin 3 2 to the heavy spin 1 2 baryons are calculated within the light cone QCD sum rules approach. Using the obtained results, the decay rate for these transitions are also computed and compared with the existing predictions of the other… (More)
The nucleon electromagnetic form factors are calculated in light cone QCD sum rules framework using the most general form of the nucleon interpolating current. Using two forms of the distribution amplitudes (DA's), predictions for the form factors are presented and compared with existing experimental data. It is shown that our results describe remarkably… (More)
Using the most general form of the baryon current, nucleon form factors, induced by isovector and isoscalar axial–vector currents, are studied in the framework of light cone QCD sum rule approach. Comparison of our results on form factors with the existing results and lattice calculations are presented.
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 a 0 meson coupling constants are estimated. Our results on these couplings are in good agreement with the prediction of the external… (More)
Recently H. Georgi has introduced an unparticle U in order to describe the low energy physics of a nontrivial scale invariant sector of an effective theory. In this work we have explored the phenomenology of an unparticle using the lepton flavour violating decay µ − → e − e + e − , and found that the branching ratio of this decay is strongly dependent on… (More)
The axial N −∆(1232) transition form factors are calculated within the light cone QCD sum rules method. A comparison of our results with predictions of lattice theory and quark model calculations is presented .
Leading logarithmic QCD corrections to the B s → γγ decays in the two Higgs doublet model Abstract We calculate the leading logarithmic QCD corrections to the decay B s → γγ in the two Higgs doublet model (2HDM) including O 7 type long distance effects and estimate the restrictions of the 2HDM parameters, tanβ and m H , using the experimental data of B → X… (More)
The transition form factors of D s → f 0 ℓν, D → f 0 ℓν and B u → f 0 ℓν decays are calculated in 3–point QCD sum rule method, assuming that f 0 is a quark–antiquark state with a mixture of strange and light quarks. The branching ratios of these decays are calculated in terms of the mixing angle.