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Semileptonic $\Omega_{b}\rightarrow \Omega_{c}{\ell}\bar\nu_{\ell}$ transition in full QCD
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abstract
We investigate the semileptonic decay of $\Omega_b\to\Omega_c~{\ell}\bar\nu_{\ell}$ in three lepton channels. To this end, we use QCD sum rule method in three point framework to calculate the form factors defining the matrix elements of these transitions. Having calculated the form factors as building blocks, we calculate the decay widths and branching fractions of the exclusive decays in all lepton channels and compare the results with other theoretical predictions. The obtained results for branching ratios and ratio of branching fractions at different leptonic channels may help experimental groups in their search for these weak decays. Comparison of the obtained results with possible future experimental data can be useful to check the order of consistency between the standard model theory predictions and data on the heavy baryon decays.
Forward citations
Cited by 4 Pith papers
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Analysis of the semileptonic decays $\Sigma_b\to\Sigma_cl\bar{\nu}_l$, $\Xi'_b\to\Xi'_cl\bar{\nu}_l$ and $\Omega_b\to\Omega_cl\bar{\nu}_l$ in QCD sum rules
QCD sum-rule calculations predict Σ_b→Σ_c, Ξ'_b→Ξ'_c and Ω_b→Ω_c semileptonic widths that differ by less than 13%, supporting approximate SU(3) flavor symmetry.
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Semileptonic $\Omega_{b}^{*}\rightarrow\Omega_{c}^{*} \ell \bar{\nu}_{\ell}$ transition in QCD
The Omega_b* -> Omega_c* l nu semileptonic decay widths are predicted with QCD sum rules: about 2.5e-12 GeV for electron/muon channels and 0.71e-12 GeV for the tau channel, with R = 0.29.
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Analysis of the semileptonic decays $\Lambda_b\to\Lambda_cl\bar{\nu}_l$ and $\Xi_b\to\Xi_cl\bar{\nu}_l$ in QCD sum rules
A QCD sum rule analysis that includes negative parity baryon states and condensates up to dimension 8 obtains Lambda_b semileptonic branching ratios near 8 percent and predicts Xi_b rates near 14 percent.
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Analysis of the semileptonic decays $\Sigma_b\to\Sigma_cl\bar{\nu}_l$, $\Xi'_b\to\Xi'_cl\bar{\nu}_l$ and $\Omega_b\to\Omega_cl\bar{\nu}_l$ in QCD sum rules
Electroweak form factors for Σ_b→Σ_c, Ξ'_b→Ξ'_c and Ω_b→Ω_c transitions are computed in QCD sum rules, producing decay widths that approximately obey SU(3) flavor symmetry along with branching ratios and new-physics p...
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