Impact of Helicity-Isospin Convention Matching on the Extraction of $\alpha$ from $B^0\to (\rho \pi {)}^0$

Radek Žlebčík

We show that the $\rho \to \pi \pi$ helicity convention used in the time-dependent Dalitz-plot measurements of $B^0\to (\rho \pi {)}^0$ decays does not match the convention assumed in the subsequent i…