pQCD plus flavor symmetry yields O(10^{-5}) branching ratios for selected B to baryon + dark baryon decays in Type-I and Type-II scenarios.
Extraction of $V_{ub}$ from the Decay $B\to \pi l \nu$
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abstract
We develop the perturbative QCD formalism including Sudakov effects for semi-leptonic $B$ meson decays. We evaluate the differential decay rate of $B\to \pi l \nu$, and find that the perturbative calculation is reliable for the energy fraction of the pion above 0.3. Combining predictions from the soft pion theorems, we extract the value of the matrix element $|V_{ub}|$ which is roughly $2.7\times 10^{-3}$.
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hep-ph 1years
2026 1verdicts
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B Meson Semi-Invisible Decays via Perturbative QCD
pQCD plus flavor symmetry yields O(10^{-5}) branching ratios for selected B to baryon + dark baryon decays in Type-I and Type-II scenarios.