| Popis: |
This proceeding covers recent measurements of charmless hadronic B decays such as B+ → K∗0(892)K∗+(892), B0 → ωω/ωφ , B0 → π0π0, B0 → ηπ0, B0 → ρ0ρ0 and B+ → K0 S π+π− reported from Belle, BaBar and LHCb experiments. In the B+ → K∗0(892)K∗+(892) decay channel, Belle found a 2.7σ excess of signal, which correspond to the branching fraction B = (0.77+0.35 −0.30±0.12)×10 and the longitudinal polarization fraction fL = 1.06±0.30±0.14. In BaBar, the B0→ ωω is measured with the B = (1.2±0.3+0.3 −0.2)×10 and the B upper limit of B0 → ωφ is set to 0.7× 10−6 at the 90% confidence-level. Belle reports an updated measurement of B = (0.90± 0.12± 0.10)× 10−6 in the B0 → π0π0 and the first measurement of B = (4.1+1.7+0.5 −1.5−0.7)× 10 −7 in B0 → ηπ0. The B = (0.94± 0.17± 0.09± 0.06)× 10−6 and the fL = 0.745+0.048 −0.058± 0.034 are precisely measured by LHCb, where the B last uncertainty is due to the B0→ φK∗0 reference mode. Finally the difference between CP asymmetries of K∗π inter |
