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Revisiting semileptonic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover><mml:msup><mml:mo>ℓ</mml:mo><mml:mo>−</mml:mo></mml:msup><mml:msub><mml:mover accent="true"><mml:mi>ν</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover><mml:mo>ℓ</mml:mo></mml:msub></mml:math> …
We systematically revisit the baryonic four-body semileptonic decays of ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}\mathbf{B}{\overline{\mathbf{B}}}^{\ensuremath{'}}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$ by the perturbative QCD counting rules with $\mathbf{B}$ representing octet baryons and $\ensuremath{\ell}=e$, $\ensuremath{\mu}$. We study the transition form factors of ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}\mathbf{B}{\overline{\mathbf{B}}}^{\ensuremath{'}}$ in the limit of $({p}_{\mathbf{B}}+{p}_{{\overline{\mathbf{B}}}^{\ensuremath{'}}}{)}^{2}\ensuremath{\rightarrow}\ensuremath{\infty}$ with the three-body $\overline{B}\ensuremath{\rightarrow}\mathbf{B}{\overline{\mathbf{B}}}^{\ensuremath{'}}M$ and ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}p\overline{p}{\ensuremath{\mu}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$ data along with $SU(3{)}_{f}$ flavor symmetry. We …