Doubly charmful baryonicBdecays

Study of scalar mesonsf0(980)andf0(1500)fromWang1, Shen2, Li3 et al. 2006Phys. Rev. D701581View full textAdd to dashboardCite

“…The reason of the difference is that the scale dependence off f and the radiative corrections to the quark loops in the operator product expansion series is taken into account in Ref. [7,8]. The larger decay constant can surely enhance the branching ratio and we expect a much larger branching ratio for the decay B → f 0 (980)K also in PQCD approach.…”

“…They find that in standard model, the branching ratio is quite below the experimental values and therefore, these modes can be a probe of the R-parity violation supersymmetric model. Within the framework of QCD factorization approach (QCDF), B → f 0 (980)K has also been studied recently [7,8]. With the decay constants and light-cone distribution amplitudes derived from the QCD sum rules, the updated results in QCDF [8] suffice to explain the experimental data.…”

“…Within the framework of QCD factorization approach (QCDF), B → f 0 (980)K has also been studied recently [7,8]. With the decay constants and light-cone distribution amplitudes derived from the QCD sum rules, the updated results in QCDF [8] suffice to explain the experimental data. It is necessary to re-analyze of these decay channels in PQCD in order to find out whether the differences arise from the difference between the two approaches or only the different non-perturbative inputs.…”

“…The decay constants and the Gegenbauer moments B m (µ) for twist-2 distribution amplitude have been studied in [7,8] using the QCD sum rules approach: …”

Study ofB¯→ΞcΛ¯c−andB¯Aubert1, Bóna2, Boutigny3 et al. 2008Phys. Rev. D542180View full textAdd to dashboardCite

“…Explanations for these widely varying values have been proposed [13,14]. It was suggested that a kinematic suppression may apply to decays in which the two baryons have high relative momentum, since this requires the exchange of two high-momentum gluons.…”