Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, L. Aggarwal, H. Ahmed, N. Akopov | Summary: We present a measurement of the branching fraction and fraction of longitudinal polarization of $B^0 to rho^+ rho^-$ decays, which have two $pi^0$’s in the final state. We also measure time-dependent $CP$ violation parameters […]
Continue.. Measurement of the branching fraction, polarization, and time-dependent $CP$ asymmetry in $B^0 to ρ^+ρ^-$ decays and constraint on the CKM angle $φ_2$