Two-body hadronic weak decays of bottomed hadrons

The structure of light diquarks plays a crucial role in the formation of exotic hadrons beyond the conventional quark model, especially in their line shapes of bottomed hadron decays. We study the two-body hadronic weak decays of bottomed baryons and bottomed mesons to probe the light diquark structure and pin down the quark-quark correlations in the diquark picture. We find that the light diquark does not favor a compact structure. For instance, the isoscalar diquark $[ud]$ in Λb⁰ can be easily split and rearranged to form Σc(*)D̄(*) via the color-suppressed transition. This provides a hint that the hidden charm pentaquark states produced in Λ⁰b decays could be the Σc(*)D̄(*) hadronic molecular candidates. This quantitative study resolves the apparent conflicts between the production mechanism and molecular nature of these Pc states observed in experiment.